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  1. Trailer Door Latch
  2. Polar Hardware
  3. Cam Door Latch
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  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
Retail:$72.30
Our Price: $61.99
You Save: 14%
Trailer Door Latch
Shipping Weight: 7 lbs
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Trailer Door Latch 305736 - 36 Inch Long - Polar Hardware
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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.
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  • Reviews (522)
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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   (522 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:

Works great for security on my trailers used at retail events. The installation was easy and looks great on the door.



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:

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:

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:

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



by:

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



by:

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



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:

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:

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



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:

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



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:

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:

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



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:

I haven’t mounted it yet but seems to be a quality product.



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:

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



by:

Thank you it is great


25
522
Show More Reviews

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

  • Is Lock Clasp Available Separately for Redline Lock Side-Door Bar Lock Assembly
    Sorry to hear about your troubles. Sounds like you will want Replacement Handle Latch for Cam-Door Lock # 158-102. This part has a length of 5-1/8 inches and a width of 2 inches. I have included a video review of the Redline Lock Side-Door Bar Lock Assembly for you to check out.
    view full answer...
  • Can 55 Inch Lock Side-Door Bar Lock Assembly be Used on a Right or Left Opening Door
    Yes, you can use the lock side-door bar lock assembly, # 3057-55, on a door hinged on the left or right. Just flip 'er over as needed! This version features a 55 inch long pipe. If you need a shorter version use # 305736 with a 36 inch long pipe.
    view full answer...
  • Is The Cam-Action Lockable Door Latch # 305736 A Good Choice For A Wooden Enclosed Trailer Door?
    The Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers - Zinc Plated Steel # 305736 is going to be a great choice for a wood enclosed trailer door. The latch and hasp can be mounted in virtually any orientation so it can be used for really any door style. The pre-installed pipe makes it an easy bolt on install and it can be locked with any standard padlock. Keep in mind that hardware is not included. We recommend using 5/16 carriage bolts, nuts and washers.
    view full answer...
  • Why Doesn't Hardware Come with Slide Bar Cam Door Latches on Trailers
    We dont' have a hardware kit for the cam door bar locks. Reason being every application is a little different so the same hardware kit wouldn't work for most people. You'd want to grab the best sized carriage bolts at a local hardware store for your door.
    view full answer...
  • Replacement Door Latch Recommendation for a Cam Style Door Lock Assembly
    Sounds like you are looking for a replacement door latch for a side bar lock assembly like the part # 305736. For that you would want the # 158-101.
    view full answer...
  • Shim Compatibility With Bar Lock
    While doing on research on this product I contacted the manufacturer that assembles this product. They confirmed that yes, the Shim for Narrow Bracket Strap Hinge Stainless Steel # PLR2001-SS will work. It adds 1/8" shim for the 36" Lock Side-Door Bar Lock Assembly # 305736 bushing as well as 2000 series hinges.
    view full answer...
  • How To Choose the Correct Length Bar for the Cam-Action Lockable Door Latch
    In regards to Cam-Action Lockable Door Latches like part # 305736, the longer bar you have for the cam lock, the more support it will offer. If you have a heavy, tall door then you'd want to consider looking into a longer bar whereas if you have a smaller, lighter door then you can use a shorter bar. That said, I don't have any formula to use for this, it's up to the installer's discretion. If you need one longer than 36" then you can get part # PLR3057 and choose your own bar size.
    view full answer...
  • Spray On Rubber Gaskets for Mounting a Cam-Action Lockable Door Latch on a Snowmobile Trailer
    I have a solution for you but we do not sell gaskets specifically for that purpose. Instead, you will want the Loctite RTV 598 High-Performance Silicone Gasket Maker item # LT37467. This will allow you to seal up any holes you have to drill. The Cam-Action Lockable Door Latch w/ 36" Pipe for Enclosed Trailers item # 305736 you were looking at is made of zinc-plated steel that is corrosion resistant. This will work great on your snowmobile trailer.
    view full answer...
  • Does the Redline Lock Assembly Require a Metal Backing Plate Or Brace
    The 36 inch Trailer Door Bar Lock Assembly # 305736 does not come with installation hardware or specific instructions on how it installs. The install will vary based on upon the trailer. Most trailer doors are wood and would need to have holes drilled through them and then use nuts and bolts to attach the # 305736 to it. A backing plate for this assembly is not required or included, but if you used big enough washers to distribute the load you should not have a problem
    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...
  • Recommended Side-Door Lock Assembly For Enclosed Trailer With 24-Inch Gate
    The handle and lock I recommend for your trailer is part # PLR3057-SS. This is a stainless steel lock. This system does not come with the required 3/4-inch pipe but you would be able to use a 24-inch length of pipe to work for your trailer. A couple other kits you may want to check out are part # PLR158 which attaches to a 3/4 inch pipe, or if you want ot use a 1-inch pipe you can check out part # 383200. The kits that you mentioned like part # 305736 that come with the pipe welded...
    view full answer...
  • Availability of Trailer Side-Door Bar Lock Assembly Like # 305736 in Lengths Other Than 36-Inches
    The Redline 36-Inch Lock Side-Door Bar Lock Assembly # 305736 that you referenced is one of two sizes offered by Redline. The other size is a 55-inch version that is being added to our website now; that part number will be # 3057-55 and this will be available for order on our site in a day or two. We also offer their Universal Cam-Door Lock for Enclosed Trailers # 383200 that does not include the required 3/4-inch inner diameter pipe. You can use this kit with a pipe length of your choice...
    view full answer...
  • Alarms and Locks to Prevent Theft From Enclosed Cargo Trailer
    I am glad you were able to avoid a loss from your cargo trailer by using an alarm system. It sounds like you have (had) a cam style door lock like # 3057-55 and # 305736 on your cargo trailer's rear door. These can be locked with items such as Global Link Vise Lock # 295-000024. If a determined thief has the time and the tools, pretty much any lock can be defeated, but alarms along with multiple locks can make your trailer a less appealing target than another, and sometimes that is the...
    view full answer...
  • Is There a Stainless Steel Bar Offered for the Stainless Steel Economy Side Door Lock
    We do offer the Economy Side Door Lock part # PLR3057-SS with a 36" steel bar as part # 305736 but it's not stainless. If you prefer stainless you'll have to source the rod locally.
    view full answer...
  • What Size Pipe is Needed to Complete the Installation of the Door Cam Lock
    You will need 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 does not require welding for installation.
    view full answer...
  • Replacement Parts for Polar Side-Door Bar Lock Assembly 305736
    We do not offer a rivet for the Polar Side-Door Bar Lock Assembly # 305736 but we do have a Replacement Handle Assembly # 158-100, Handle Latch # 158-102 and a Bracket Assembly # PLR3057-100.
    view full answer...
  • Rear Door on Circle J Horse Trailer Has Play in It when Closed
    From what I could find the Circle J horse trailers use a sort of cam-lock design similar to what you might see on a big rig trailer # 383200 or a side door bar lock like # 305736. These designs work fine until something gets knocked out of alignment. The most likely cause is damage to the door or a hinge problem. If the door is warped or if you are able to wiggle the door at the hinges then that would be the issue. Straightening out the door or repairing it as needed and repairing the...
    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 store 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. Hardware will need to be provided...
    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...
  • 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...
  • Ramp Door Lock Assembly Recommendation for an Enclosed Trailer
    If you were to mount the 36" Lock Side-Door Bar Lock Assembly # 305736 on the edge of the corner of your trailer the handle could swing around the corner beyond 180 degrees as there is not a stop in the hinges of the lock. So yes, this could swing 270 degrees from the mounting plane so it should work well for you.
    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
  • 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
  • Replacement Trailer Door Latch for a 1-1/2 Inch Wide Handle
    I do have options for you but the Replacement Handle Latch for Cam-Door Lock part # 158-102 is designed to be used with the Lock Side-Door Bar Lock Assembly part # 305736 which has a handle that measures to be 1-1/4" wide therefore would not be the hasp I recommend for you. Instead, I recommend using the Replacement Hasp for Polar Cam-Action Latch Kits part # 158-101 which can accommodate handles up to 1-11/16" wide. If you would like to replace the entire cam lock system then I have...
    view full answer...


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