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 LO246 Product Details Size 32 Compatible with Duct 4"

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

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

+ Product Details Size – 18"w X 20"h is the size for the duct opening measurement only

875" width X 25

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 LO246 Product Details Size 32 Compatible with Duct 4" actual front end outer dimensions are approximately 34 5 8" width X 8 5 8" height + Product Details Perfect Fit & Easy Sizing Designed for a 30" x 22" OR 22" x 30" duct opening (measured at the opening)