National Gypsum Company is the exclusive service provider of reliable, high-performance products manufactured by its affiliate companies and marketed under the Gold Bond®, PermaBASE®, and ProForm® brands.

Envisivent is a mud-in flush mounted air return vent that blends seamlessly into walls and ceilings for a contemporary aesthetic. Designed to be installed during the drywall stage with a few easy steps – Mud, Tape, Sand, and Paint – and the air return vent now becomes part of your wall or ceiling.