I got it at homedepot. It was 3 or 4 dollars a can. It was the slow setting kind. We had to reseal the shower. The graphics on the passenger side was coming off and thor sent it to me and I put on. The windshield washer hoses were not there so they would not work. The awning was pulling loose from body had to screw it back in. And the turning cameras stoped working I ordered a new control box to fix it from a place in New York. It is located under the cover above the dash. We are camping in now at the nascar race in Texas right now so we don't let the problems stop us. It's me the wife and two little dogs. Been her 5 days so far. Getting about 10 miles to the gallon. And the generator burns about 5 gal over a 24 hour run with the a/c.