36"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 37.875"W X 9.875"H] Compatible with Duct 8" Some of our best features

Some of our best features aren't readily apparent

+ Product Details Size – 40"w X 10"h is the size for the duct opening measurement only

MERV 8 - Your Ideal Choice: Experience the perfect balance of filtration with MERV 8 rating

actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

even without needing to remove the thermostat

36"W X 8"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 37.875"W X 9.875"H] Compatible with Duct 8" Some of our best features+ Product Details Size 36"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 37. 875" width X 9. 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