I recommend the Adco Olefin HD All-Climate + Wind RV Cover # AD79ZR for your 2007 Keystone Everest 344J camper. While there is not any custom fit covers for your Everest this cover is designed to fit your a 5th wheel camper that is 37'1"-40' long. I verified that your Everest is 37'4" long so this cover is the correct fit. The Olefin is the newest and best cover available from Adco. It will protect against wind, sun, snow, and dirt and is great for long term storage.
The 293P and 295TS... view full answer...