20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] Color_Anodized Aluminum actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in

actual front end outer dimensions are approximately 34 5/8" width X 8 5/8" height

+ Product Details Size - 16"w X 24"h X 2"d (for duct opening measurement only)

Actual Filter Size – 7 3/4"w x 5 3/4" x 1"

powder-coated steel

+ Product Details Perfect Fit & Easy Sizing - Designed for a 30" x 22" OR 22" x 30" duct opening (measured at the opening)

20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] Color_Anodized Aluminum actual front end outer dimensions 4 X 12 Is CRFG2028 Width_14in actual front end outer dimensions are approximately 34 5 8" width X 8 5 8" height + Product Details Size 16"w X 24"h X 2"d (for duct opening measurement only)