[Motor31]

As already noted the entire bottom of the rig is prone to allow air transfer. You might also check under the kitchen slide for gaps in the bottom wiper seal. DT cut notches in the seal to prevent the seal from getting caught in the roller assembly. This allows fee passage to drafts and small critters to the interior of the rig. You can either put a patch over the notch or stuff the holes with a rag.

Get some additional seal material to stop drafts around the basement doors as after a bit of time the rubber seals the factory put in take a set and no longer seal properly. There is also no draft sealing around the circumference of the slide where it mates to the interior wall of the trailer. The only seal we have is the wiper seal on the slides.