Promaster Vent Fan Roof Adapters/Shims
- Use in the “valleys” of your Promaster roof corrugations to smooth out the surface to install a vent fan such as the Maxxfan.
- Made from weatherproof plastic.
- Kit includes 6x “shims” which is enough to fill in a space for a standard 14″ x 14″ opening.
- We recommend using 3M 5200 adhesive to secure the shims in the valleys.