16" X 16" [Duct Opening] 4-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Compatible With Duct 8in The back is completely insulated 4 X 12 Is CRFG2028 Width_14in
Yard notes & kiln story
Description
16" X 16" [Duct Opening] 4 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 17.75"W X 17.75"H] Compatible With Duct 8in The back is completely insulated 4 X 12 Is CRFG2028 Width_14in The back is completely insulated + Product Details Perfect Fit & Easy Sizing Designed for a 16" x 20" OR 20" X 16" duct opening (measured at the opening)