The Adco SFS AquaShed Cover for Travel Trailer, # 290-52243 that you refer to has one large area in the center of the street side cover. Please note the attached image.
When measuring for a trailer cover you want to measure from the front of the trailer box, not the tongue, to the rear including anything that is attached to the rear. This will include a spare or a ladder at the farthest edge at the rear of the trailer, measure the length, width, and height of the body.
I suggest you... view full answer...
I recommend the 15,000 Btu Advent Air Replacement RV Air Conditioner for Dometic Setup w/ Start Capacitor, # ACDOM150 and then add on the Electric Heat Strip for Advent Air RV Air Conditioners, # ACMHD. This AC option is designed to replace your currently installed Dometic air conditioner. It will plug directly into your current setup to seamlessly function with your, in-good-working-order Dometic air distribution box and thermostat.
If you prefer a 13,500 Btu rated unit, select Advent... view full answer...