I took off my "sail panels", those trim panels just behind the driver and passenger doors. They cover some vents with little rubbery flaps that let the body breath.

Anybody got any good recommendations on some type of material to use to make new flaps?

I tried 40 mil EPDM roofing membrane, but found it too thick.

 

bicycle tube. thats what i used!

 

I think there is a write up about this on 4Crawler if I remember correctly

 

pool liner also is a good replacement


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