Forum Discussion
Bedlam
Sep 15, 2015Moderator
If there is a foil backing, it reduces the heat from the engine entering the cab through the firewall. The weave or foam in the liners is for sound deadening. Some liners have the additional benefit of being a fire retardant or blanket.
About Travel Trailer Group
44,052 PostsLatest Activity: Oct 14, 2025