8"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 9.875"W X 5.875"H] Compatible With Duct 12in Actual Filter Size – 23

Actual Filter Size – 23 3/4"w x 21 3/4" x 1"

actual front end outer dimensions are approximately 30 5/8" width X 26 5/8" height

+ Product Details Size - 30"w X 20"h X 2"d (for duct opening measurement only)

Ideal for Walls & Ceilings: Designed for seamless installation in standard 18" X 12" duct openings

commercial

8"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 9.875"W X 5.875"H] Compatible With Duct 12in Actual Filter Size – 23+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 875" width X 5. 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 just