Grilles, Registers, Diffusers (GRD)
- Patented one piece grille, damper box
- Virtually airtight
- Lightening fast installation
- Adaptable quick rough-in polymer register box




Why TRUaire Retrofit GRD?
Virtually airtight butterfly damper rubber gasket delivers superior seal when closed, with 100% of the air flow passing through it. |
Patented one-piece design with no assembly required, eliminating the need for tedious mastic and external sealers, cutting attic time. The quickest diffuser install in the trade with one man only. Damper handle allows smooth, easy turning adjustment from below for fully open to tightly closed position. |
Flange is flexible to conform to drywall backing, eliminating leakage between grille and box. For discerning customers, TRUaire Retrofit Retro style offers the look and feel of a reproduction cast iron grille without the high cost and weight. |