bing tracking image
  1. Trailer Door Latch
  2. Polar Hardware
  3. Cam Door Latch
  4. Latches
  5. 36 Inch Long
  6. Lock Not Included
Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers - Zinc Plated Steel

Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers - Zinc Plated Steel

Item # 305736
Our Price: $70.33
Trailer Door Latch
Shipping Weight: 7 lbs
Add to cart
Trailer Door Latch 305736 - 36 Inch Long - Polar Hardware
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
Cam-action door latch with pre-installed 1" diameter pipe is ideal for side doors that are smaller than rear doors on your trailer. Double-action handle protects against jarring while driving. Non-removable pin helps keep your cargo safe. Great Prices for the best trailer door latch from Polar Hardware. Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers - Zinc Plated Steel part number 305736 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (519)
  • Q & A (0)
  • Photos

Polar Hardware Trailer Door Latch - 305736

  • Cam Door Latch
  • Latches
  • 36 Inch Long
  • Lock Not Included
  • Polar Hardware

Cam-action door latch with pre-installed 1" diameter pipe is ideal for side doors that are smaller than rear doors on your trailer. Double-action handle protects against jarring while driving. Non-removable pin helps keep your cargo safe.


Features:

  • Cam-action door latch with pre-installed pipe is ideal for side or small rear doors on utility trailers, vans, and trucks
  • Bridge-type hasp helps prevent accidental opening and ensures safe latching action
    • Can be locked with padlock (sold separately)
  • Double-action handle assembly ensures simple, secure latching and helps protect against in-transit jarring
    • Flip the handle keeper on the hasp up and lift the handle
    • Rotate the handle to either release or engage the cams
  • Non-removable pin ensures maximum security to keep your cargo safe
    • Helps prevent tampering and removal of door
  • Reversible design allows the latch to be used on left-hand or right-hand doors
  • Zinc-plated steel construction is corrosion resistant
  • Black vinyl handle provides a smooth and comfortable grip
  • Simple bolt-on installation
    • Mounting hardware not included
  • Made in the USA


Specs:

  • Hasp dimensions: 5-1/8" tall x 2" wide x 1-3/4" thick
    • Distance between mounting holes (center to center): 4"
    • Mounting hole diameter: 3/8"
    • Lock hole diameter: 1/2"
  • Bracket dimensions: 4-1/2" tall x 4-1/8" wide
    • Distance between mounting holes (center to center): 3-1/4"
    • Mounting hole diameter: 3/8"
  • Handle length: 14"
  • Pipe dimensions: 36" long x 1" diameter


Product shown with lock (lock not included)

Product shown with lock (lock sold separately).



3057-36 Polar Hardware Side Door Bar Lock Assembly Weldment w/ 36" Pipe





Customer Satisfaction Score:


Customer Reviews

Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers - Zinc Plated Steel - 305736

Average Customer Rating:  4.7 out of 5 stars   (518 Customer Reviews)

Cam-action door latch with pre-installed 1" diameter pipe is ideal for side doors that are smaller than rear doors on your trailer. Double-action handle protects against jarring while driving. Non-removable pin helps keep your cargo safe.

by:

Item was as described, well made and performs flawlessly. It matched the rear door latches and adds confidence that items being transported or stored in the trailer will remain secured. As others have stated use 5/16 carriage bolts. I found for my use 2-1/2" bolts were way too long. Therefore, I cut them flush and siliconed over them just for good measure. I used 5/16, 2" fender washers with nylon lock nuts. In addition, I reenforced the back walls and door with steel slotted flat bar. I drilled one hole over size to ensure fit between the mounting bolts. I highly recommend this product from etrailer. Always fast shipping and unmatched customer service. You can definitely buy with confidence from etrailer. Great company and staff!



by:

Thanks for the follow up. We just bought a Look 6' x 12' cargo trailer that only had the in-door lock on the side door. Of course we wanted to beef that up and in searching found your site. After reading the reviews we ordered the #305736 36" side door bar lock assembly on 1/20 and received it 1/22. Great! We installed it the next day in about an hour. It went on with minimal effort (drilling the holes was the worst) and looks as if it came on the trailer. We did install the hinge side over the door trim and used backer plywood inside with oversized washers and locking washers. We did the same for the door bracket. The pictures on your site from customers helped us, so we have attached a couple of our own. Thanks e-trailer! The Wheelers

The W.

1/29/2015

This product still works great and looks like new! We will go to you first if we have any other needs.



by:

Cut up my wife’s cutting board to make a spacer for the side door, other than that piece of cake. Much better than the original latch with a padlock.



by:

I just attached the 36" latch bar. it only took about 30 minutes. Took longer to make sure it was positioned right and not to impede on the rv latch. I included a small bracket on the door as well. Latch hardware seems better the originals on back. 5/16" carriage bolts are needed. I used 2 1/2" then cut off anything past the nut. Pictures included.

Steve S.

12/9/2013

Michael,Im doing exactly what you did putting this bar lock over an RV style door. The door is about 12 from being flush with the trailer side and it looks like yours may be too. Did you bend the strap to get it to lay flat against the door? I thought of spacing out the hinge plates so theyre flush with the door but dont think that would look good.Also, did you remove the rear lip on the aluminum trim the hinge plates are mounted over, space under the hinge plates, or just mount over it?Thanks,Steve

Michael

12/27/2013

Steve,there is an aluminum trim around the rv door, I just bumped the hinge of the bar to the closest lip of that alum. trim to the door basically mounting over the top of the trim -so on top of the left side bump and bumped the right side if that makes sense. it kinda naturally fits. the bar lays nice and tight to the door by just mounting it ad is. Add some metal straps on iside of door mount to beef that up. I used 2 or 2.5 inch bolts with oversized washers on inside alum. jamb and cut off excess bolt and grindedsanded smooth to nut. I siliconed the gaps on the outside above hinge because it wont sit flat due to the alum. trim so water doeant get on by bolts. Hope that helps.

Patrick B.

12/28/2013

Thanks for coming back and following up!

Michael K.

10/24/2014

Working great. Would order from you again.

Scot S.

3/5/2015

Is there a weak point created when bolting the hinges so close to the edge of the door opening? Could you install one of these by moving the whole assembly to the left, thus creating room for hinge backplates? I guess you would have to lower the mount point as well, to avoid the doors backplate from hitting the factory lock and use a shorter but wider door backplate.I assume you feel your hinges are secure. I have yet to take ownership of my trailer so I dont know what kind of stud is framing the door.I am so happy this accessory is available. I really didnt notice the pitiful side door lock until after I purchased my trailer. A crowbar and about 5 seconds is all it would take to get inside!

Patrick B.

3/9/2015

Usually these latches are not positioned so closely to the edge of the door. Most of the time, the hinges of the handle side and the latch for the handle are set equidistant from the edges of their respective doors.


by:

E-trailer did an excellent job of shipping and handling of the product sent to me. It is of high quality and should last for years. It was delivered when they said it would be and I have installed it. Quite happy with it but wish that they would stock a 45" bar lock

Les S.

8/31/2016

The latch assembly is exactly what I needed for the shed that I built to house my small refrigerator. The critters or other unwanted cant get in.



by:

We recieved our door-bar on Thursday Evening, and Friday I installed it in about an hour. I purchased $7.50 worth of carriage bolts & washers & ny-lock nut. 2.5 carriage bolt for the 36" rod hinge & 2" for the door. Our older Aluma trailer door lock with the "rod & lever" closure was not keeping the door completely closed plus the keys are obsolete and needed a new key.
With this set up my doors stay sealed to keep out dirt & dust and I can use any heavy duty lock. (Lock upgrade purchase soon) Thanks for fast delivery service too. Odered on Monday & recieved on Thursday!
Plus we love our 1.25 receiver hitch for our VW Jettawagen which we use to haul our bicycles! (purchased in October). We Paid $75 to have it professionally installed but saved $100 on the hitch.



by:

Should include hardware,especially since the bolt holes are not universal to all trailers. Plus had to put in a spacer because handle wouldn't shut properly.



by:

Installation was very easy. The handle is solidly built. Excellent addition for added security on my trailer



by:

Pretty nice product. Appears to be made in the USA by Polar. One of the welds is what I would call sub par, but the rest look OK. Easy install on my cargo trailer's side door. Takes 5/16" carriage bolts.



by:

Fit pretty well after some light modification but much better made than my factory 2023 Kauffman trailer came with.



by:

Used it on a enclosed trailer side door. Works perfectly.



by:

One hinge was noticably crooked on one end of one side. Looked like [crap] on the trailer. I had to modify it to clean it up. Poor craftsmanship on that one.



by:

Well built unit. Every bit as good as the latches that came on the trailer originally.



by:

Received the item very quickly for having chosen the "economy" shipping. Installed on 2015 Haulmark Transport side door for additional security, used in conjunction with a puck lock. Install was easy with the help of the reviews from this site, particularly the one from Michael K. I attached mine in the same manner as Michael, on top of the aluminum trim and butted up against the lip. I believe it would be just as functional and still secure through a vertical post if secured at the edge of the aluminum trim, however there seems to be better door engagement with it on top of the trim. I've attached a close-up of the mounting, as the description in other reviews is lacking in clarity. The door is rather flimsy on the this model of trailer, as I'm sure is the same with most trailers, so some backing will be required inside the door for the mounting hardware to distribute the load. I used a 1/8"x2" strap steel that I found at the local hardware store. Very satisfied with the end result, quality product at a great price.



by:

here is a pic of the trailer I built, used the products from your place. started with a simple
utility trailer, and build this enclosed trailer.

Ryan

3/28/2016

Ed- awesome build. Im building something very similar. Where did you get the trim for the door so it can seal? Also what about the larger top trim?



by:

every order from eTrailer has arrived early and in perfect condition. The products always exceed expectations.



by:

Never use U P S they did not come up drive to deliver they put it behind a tree rite at the road U P S are the Laziest people I ever delt with I have a business and Never will use them



by:


My shed door didn't close well and
the shed was becoming a haven for wasps. After searching for a door latch that would seal the door I found your website and you had the perfect product for my project.

Your site was easy to navigate and simple to use. I was happy with the email updates on the shipping status and the latch arrived in good time and in good condition.

This might be the first time your trailer parts were used to fix a shed, so I'm including a picture.

All in all, a great experience.



by:

Great replacement super fast delivery! Broke both door locks end of last week and received them today!



by:

It makes a big difference having one of these added to my side trailer door for security. Well built and was easy to install.



by:

Works great gives a good positive lock you don’t have to worry about the door opening when the trailer flexes



by:

My trailer didn't come with one so I was always worried about the side door coming open. Not anymore!! This item is perfect for what I needed, easy install too. A LOT cheaper price then expected! Arrived sooner then was told.

Greg

6/11/2018

Loved your product! Easy to install, great price, and arrived earlier then expected! Piece of mind now going down the road. That side door is NOT coming open! Ill be back!

Greg

5/22/2019

Perfect! No issues....its strong and smooth operation....and PEACE OF MIND my sidedoor will NOT come open driving 65 on the highway.



by:

Came as described, and in the time frame described(less than actually). Good customer service!



by:

Holds door securely shut. I added a custom bracket to stabilize the side of this homemade box, by using the back door as a shear wall. See special bracket just below top hinge, under rod. The right wall cannot vibrate when driving, or be pushed out by contents inside.



by:

The door latch was a great replacement for one of our enclosed trailers.


25
518
Show More Reviews

See what our Experts say about this Polar Hardware Trailer Door Latch

  • Replacement Door Lock for Trailer Horse Tack Room Door
    If the lock on your tack room door of your 2006 Circle J Horse Trailer measures 36 inches, # 305736 will work great for you. If that will not work I've linked our selection of door locks for you.
    view full answer...
  • Does the 55 inch Door Lock Side-Door Bar Lock Assembly # 3057-55 Include Door Lock Plate
    Yes, the door lock plate that you see in the pictures for the part # 305736 is included with the 55 inch version of the lock part # 3057-55.
    view full answer...
  • Can the Lock Side-Door Bar Lock Assembly Be Used On Double Doors
    Yes, the Lock Side-Door Bar Lock Assembly part # 305736 can be used to hold a set of double doors together. That said, you may also want to add some keepers on the top or bottom like part # F719-182Z104 for additional support but that is entirely up to you and how heavy/large the doors are.
    view full answer...
  • Hardware Needed To Install 36 Inch Lock Side-Door Bar Lock Assembly
    To install the 36 Inch Lock Side-Door Bar Lock Assembly # 305736 you will want to use carriage bolts, nuts, and washers. There is not a part number that includes this hardware for # 305736. You will want to use 5/16 inch carriage bolts to secure the latch to the trailer. You can find these carriage bolts at your local hardware store.
    view full answer...
  • Will the Lock Side-Door Bar Lock Assembly Fit Over a Door Latch
    That would depend on several different factors such how much the door sticks out away from the trailer and how much the handle sticks out away from the door. However, if you do run into clearance issues you can always install a spacer on the hinge for the Lock Side-Door Bar Lock Assembly part # 305736 which you can see in the attached photo. We don't carry these spacers but I am certain you would find something at your local hardware store. Unfortunately, there wouldn't be a way for me...
    view full answer...
    Image 1 for
  • Door Lock Recommendation for a Ramp Style Trailer Door
    If you have a ramp style door that swings down and becomes a ramp what I recommend you do is purchase 2 separate 36 inch Lock Side-Door Bar Lock Assemblies, part # 305736, and mount one on either side of your door. This way you will get a handle and hinge on either side of the door like you want.
    view full answer...
  • Replacement Handle Recommendation for Lock Side-Door Bar Lock Assembly
    For just the handle of the # 305736 you would want the part # 158-100. I attached a review video for this handle for you to check out as well.
    view full answer...
  • Is 55" Lock Side-Door Bar Lock Assembly # 3057-55 the Same as # 305736 Except for Longer Length
    Yes, the 55" Lock Side-Door Bar Lock Assembly # 3057-55 that you referenced would be the correct replacement handle to replace what is on your trailer. Its the exact same thing as the # 3057-36 that you also referenced except with a 55 inch length bar instead of 36 inches like the # 305736.
    view full answer...
  • Over-Under Axle Conversion Kit for 2-3/8-Inch Trailer Axle
    When it comes to installing an axle flip kit on your 16 foot enclosed trailer The Dexter Trailer Springs Over-Under Conversion Kit # K71-384-00 will work for you if you have a 2-3/8 inch axle and have double-eye leaf springs only. I attached a review video link below.
    view full answer...
  • Rear Door/Ramp Latch for Holding Horse Trailer Ramp in Place
    Sounds like you have a rear ramp/door on a horse trailer and need a cam style latch to hold it in place when shut. For that the 36" Lock Side-Door Bar Lock Assembly # 305736 can be used for this. It would be just a matter of mounting the assembly on top of the ramp/door to hold it up there. Or you could use two of these, one on each side and that would work as well. There are holes on the latches that you can run a padlock through like the # ML1KA. If you have something totally different...
    view full answer...
  • Where Can I Get a 3/4 inch Bar to use with the Lock Side-Door Bar Lock Assembly # 383200
    You will need to go to a hardware to get a 3/4 inch inside diameter pipe to complete the installation of the Universal Cam-Door Lock for Enclosed Trailers, item # 383200. Some welding is required for installation of this kit. We also have the 36 inch Lock Side-Door Bar Lock Assembly, item # 305736, that is ideal for use on trailer side doors that may be smaller than rear doors. This item is complete and does not require welding for installation. Mounting hardware to secure the assembly...
    view full answer...
  • Availability of a Door Handle for a 2007 Circle J Horse Trailer
    Yes, we currently offer a couple door handles that could would work with your 2007 Circle J horse trailer. If you are looking for a rear door handle, the Redline lock bar assembly # 305736. It's has a 36 inch long pipe. Or the Redline # 3057-55. It will have a 55 inch long pipe. If you are looking for side door locks, the Redline locking steel flush door latch # L3980 is easy to install and has a rustproof finish. This handle will work on doors up to 1-1/16 inches thick and can be locked...
    view full answer...
  • Availability of Strong Theft-Proof Latch for Recently Vandalized Enclosed Cargo Trailer
    We do offer a replacement door latch, part # 158-101. If you used the Blaylock Door Lock for Enclosed Trailers, part # BLDL-80 in conjunction with the latch, you would certainly provide additional theft deterrence. The lock will not turn away the most determined thief, but will likely make them move on to an easier target. You would need to replace your existing damaged keeper latch with the 158-101. Once installed, the lock would install over the keeper latch and protect it. We unfortunately...
    view full answer...
  • Are Redline and Polar Cam-Action Lockable Door Latch 305736 the Same Thing
    The Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers # 305736 from Polar is the same thing as the Redline 305736 like what you're asking about. I'm not sure why the name change but it has the same specs as you can see in the linked videos.
    view full answer...
  • Availability of a 55 inch Cam Lock Door Lock for Enclosed Trailers
    You would need to use the Universal Cam-Door Lock for Enclosed Trailers, item # 383200, to create a bar lock assembly of 55 inches. With this item you supply the 3/4 inch inside diameter pipe to make a custom door lock. Some welding is required for installation of this kit. Due to shipping restraints we do not have a Side-Door Bar Lock Assembly longer than 36 inches at this time.
    view full answer...
  • Replacement 1-1/2" Lower Trim and Cam-Action Door Lever Kit for an Enclosed Trailer
    Thanks for the photos, Audrey! To replace your lower trim we have a few different options, and the correct one just depends on how much of that trim is on the underside of your trailer: - 93-1/2" Long x 3/4" Tall x 1-1/2" Deep # 36290-955 - 93-1/2" Long x 1-1/2" Tall x 1-1/2" Deep # 36293-955 - 93-1/2" Long x 1" Tall x 1-1/2" Deep # 36291-955 Then to replace the door kit we have the Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers # 305736. We unfortunately don't have...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Availability of 60 Inch Cam-Door Style Lock Kit
    The 55 Inch Lock Side-Door Bar Lock Assembly # 3057-55 referenced in your question is also available in a 36 inch size, with part # 305736, however there is not a 60 inch unit currently available. I instead recommend looking at the Polar Cam-Action Lockable Door Latch Kit # 383200. This steel cam-action door latch is a more universal design that does not include the 3/4 inch inner diameter pipe. This will allow you to use this kit with a pipe that features a length of your choice, as...
    view full answer...
  • Recommended Ramp Hardware to Add Ramp to 2002 Sundowner Gooseneck Horse Trailer
    We do not have the Ramp you need, but we do have the hardware you would need to add a ramp to your 2002 Sundowner Gooseneck Horse Trailer. You will want a ramp door hinge like the Polar # PLR1902. You will weld the outside cylinders of the hinge to the trailer and the center section will be welded to the ramp you are adding. Another option is to use the 3" Wide Continuous Stainless Steel Hinge, 6' Long # SH300. To hold the ramp in place for travel, I recommend the 36" Lock Side-Door...
    view full answer...
  • Recommended Door Locks for Enclosed Trailer
    The Atwood AMPlock Trailer Coupler Latch Lock referenced in your question is really designed for trailer couplers to help deter theft of the trailer itself. It secures the trigger latch on the coupler so it cannot be removed from the tow vehicle or secure it to a would-be thief's tow vehicle. A better option for the doors on your enclosed trailer will be with an entry door lock like the Global Link RV Latch Kit # 295-000019. This locking latch kit lets you secure the door on your trailer,...
    view full answer...
  • Can the Length of the Pipe be Adjusted on 55 Inch Lock Side-Door Bar Lock Assembly
    The pre-assembled cam door lock # 3057-55 is already all put together and can't easily be modified and you may end up having to weld anyway. So I would just go with the universal one, # 383200, and having someone weld it all up for you for a nominal fee. There is likely a machine shop or muffler shop that can do that for you. The other option is to go shorter, # 305736, which is a 36 inch bar.
    view full answer...
  • Mounting Bracket Dimensions for the Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers
    Thanks for reaching out! The width of the mounting bracket for the Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers # 305736 is 2-1/4" while the distance from the center of the mounting hole to the inner edge of the bracket is 1/2" (see attached photo). I've also linked some review and installation videos for you to check out!
    view full answer...
    Image 1 for Image 2 for
  • Available Locks and Replacement Parts for Horse Trailers
    We have all sorts of door and vent parts for all types of trailers. And we can help you find items specific for horse trailers too; just click on the link provided to see all categories of items for horse trailers. Next click on the heading Door Latches, first image on the second row, to see just those items, such as flush latch # PLR5115 and # L3980. We also have Side-Door Bar Lock Assembly locks like # 305736.
    view full answer...
  • Does a Pipe Get Welded to the Cam Ends of the Universal Cam-Door Lock, # 383200
    First, the Universal Cam-Door Lock, # 383200, does not come with the pipe. You will need to provide a 3/4 inch diameter pipe. I would use regular steel because it is easier to weld then galvanized materials. The handle gets welded to the pipe but none of the other parts. I have linked a video review for you. If you want something similar that includes the pipe you can use # 305736.
    view full answer...
  • Rear Door/Ramp Latch Placement for Horse Trailer
    Where you install the latch depends on where you locate the pipe and handle of the Cam-Action Lockable Door Latch item # 305736 on the opposite door. These components are typically centered on the back doors but you will want to install the latch last.
    view full answer...


< Previous
123. . .4



Do you have a question about this Trailer Door Latch?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Robert G
Expert Research:
Robert G
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Adele M
Updated by:
Adele M
Employee Amanda M
Updated by:
Amanda M
Employee Mike S
Updated by:
Mike S
Employee Noah M
Updated by:
Noah M
Employee Cole B
Installed by:
Cole B
Employee Jacob H
Installed by:
Jacob H
Employee Zach D
Video by:
Zach D

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.