Wasps, mud daubers, birds and rodents pose a serious threat to the furnace on your vintage trailer. They can enter through any opening, including through the furnace vents.  When they get into furnaces, they often cause damage by building nests that interfere with air flow.

This screen fits Suburban, Hydroflame, and many Coleman and Sol-Aire furnaces.  It is 4" x 7-1/2" and 1-1/8" deep.  Check your dimensions because, while this is a common size, there are a few different sizes available.

The screen and retainer tension springs do not block the air flow but they do stop damaging pests.

Easily installs in minutes with the tool and springs that are included.