We have a coleman direct vent air furnace in a mobile home. Uses propane. Trying to find owners manuel or just figure out where the filters go. It seems to be all sealed tight. I know it has to have filters some where.

Almost all Coleman mobile home units have the air filter in the front door of the unit. It is not a fiberglass filter but a this 1/4 inch foam filter held in with rods or special cilps. See the below site and ask your question under Coleman. These folks know all about mobile home units and they sell the filters and attachment devices.

Index page (http://www.mobilehomerepair.com/phpbb/index.php)

Thanks for the help

No problem.