20"W X 40"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 41.875"H] 8" Diameter + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 6" or 6" x 12" duct opening (measured at the opening)

This versatile solution enhances air supply and adds a touch of class to your space

+ Product Details Size - 20"w X 10"h is the size for the duct opening measurement only

and wildlife

Actual Filter Size – 35 3/4"w x 5 3/4" x 1"

20"W X 40"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 41.875"H] 8" Diameter + Product Details Perfect Fit+ Product Details Size 20"w X 40"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 875" width X 41. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was