28"W X 6"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 29.875"W X 7.875"H] Blade +How To Measure A Grille Compatible With Duct 7in Applications This sheet metal DDAG-A-1212

+How To Measure A Grille Overall Size:

+ Product Details Perfect Fit & Easy Sizing - Designed for a 28" x 12" OR 12" x 28" duct opening (measured at the opening)

Actual Filter Size – 23 3/4"w x 17 3/4" x 1"

+ Product Details Size – 6" x 8" or 8" x 6" is the size for the duct opening measurement only

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 10" or 10" x 12" duct opening (measured at the opening)

28"W X 6"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 29.875"W X 7.875"H] Blade +How To Measure A Grille Compatible With Duct 7in Applications This sheet metal DDAG A 1212 +How To Measure A Grille Overall Size: + Product Details Perfect Fit & Easy Sizing Designed for a 28" x 12" OR 12" x 28" duct opening (measured at the opening)