6"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 7.875"W X 5.875"H] 18" Round Duct Pipe + What Is A MERV

+ What Is A MERV Rating Overall Size:

actual front end outer dimensions are approximately 14 5/8" width X 24 5/8" height

Discover the perfect balance of style and functionality with our Ceiling Grille Diffuser

+ Product Details Size - 4"w X 20"h is the size for the duct opening measurement only

Do not measure the overall size of the register itself

6"W X 4"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 7.875"W X 5.875"H] 18" Round Duct Pipe + What Is A MERV+ Product Details Size 6"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 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