Be careful, they changed the canister a few years back. I drover 45 miles to get one, got home, found I had the 'other one'! The pacaging should tell what years they fit, there are only two of them.
2006 Flagstaff 831RLSS Travel Trailer
2007 Chevy 2500HD 'Classic' with the Duramax engine.
Converting a 1956 GMC PD4501 Scenicruiser, ex Greyhound into a motor home.