Looking at the specs for your 2005 Shadow Cruiser Sport T139 it looks like the length ranges from 14'7" to 14'9" so the Adco Olefin HD All-Climate + Wind RV Cover for Travel Trailer # AD57ZR is the correct fitting cover for your camper.
This cover works well in all climates because the heavy-duty, 4-layer fabric protects against UV rays, dirt, wind, and snow. Slip-seam strap system ensures snug fit and prevents damage from high winds. Secures with cam buckles. The air vents allow this... view full answer...
We do indeed have the correct grease seal for your 5,200 lb Lippert axle; I checked directly with them and can verify the correct seal is the following:
- Grease Seal - Double Lip # GS-2250DL view full answer...
The Electric Heat Strip for Advent Air RV Air Conditioners # ACMHD will connect to either the Relay Box # PXXACRG12RB that came with your Air Conditioner # ADV64FR. Or it will attach to the Air Distribution Box # ACDB attached to the air conditioner.
If you are using the Advent Air Replacement RV Air Conditioner for Dometic Setup # ACDOM150 you will need to find a heat strip from Dometic for your air distribution box. view full answer...
Yes, the Adco RV Cover for Travel Trailers #AD67ZR that you referenced does have an access panel for a trailer door at the rear of the trailer on the passenger side. If you check out the picture of a different model that I attached, you'll see the panel opened. view full answer...