20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] 18" Diameter ensuring consistent temperature control

ensuring consistent temperature control

Ideal for Walls & Ceilings: Designed for seamless installation in standard 8" X 4" duct openings

customize cuts and flares as needed

Design – Fixed Hinged for easy filter change & cleaning - uses a 1" thick filter

+ Product Details Size – 8"w X 26"h is the size for the duct opening measurement only

20"W X 18"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 19.875"H] 18" Diameter ensuring consistent temperature control+ Product Details Size 20"w X 18"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 875" width X 19. 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