Air Distribution · Plenums
Insulated exterior plenum
Plenum box assembly — Rooftop/exterior wall
ConnectionWeatherproof inlet/outlet
SupportStructural support
How to install it
- 1
Set on frame
- 2
connect duct
- 3
seal air and weather barriers
- 4
insulate/jacket seams
- 5
provide drainage and access.
Quality check
- Weather-tight, vapor barrier continuous, no ponding
Stop and verify
Stop if roof/wall waterproofing is unresolved