20"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 25.875"H] 12in diameter actual front end outer dimensions

actual front end outer dimensions are approximately 16 5/8" width X 8 5/8" height

Actual Filter Size – 17 3/4"w x 25 3/4" x 1"

it effectively prevents unauthorized access

+ Product Details Size – 10"w X 8"h is the size for the duct opening measurement only

scratch-resistant surface that gleams like it's just been waxed

20"W X 24"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 25.875"H] 12in diameter actual front end outer dimensions+ Product Details Size 20"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 875" width X 25. 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