Just to be clear... you are saying it should be installed with an additional gasket to the one that’s on the bottom of the canopy?
Call Ok4WD and talk to RinBumping an old thread here with hope for some measurement assitance.
Looking for the outside dimensions of a long bed Alu-Cab Canopy. Just length and width.
Trying to make this work on a 1st Gen Tundra, which I think is very close as the AT Habitats work with both.
Appreciate any help