18"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 9.75"H] w18h18 Filter Grille features a user-friendly

Filter Grille features a user-friendly plastic latch that requires no screwdriver for opening

+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 34"h is the size for the duct opening measurement only

Example: If your hole is 20" wide by 14" tall

rust-free aluminum construction with smooth finished edges and counter-sunk screw holes (screws included)

18"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 19.75"W X 9.75"H] w18h18 Filter Grille features a user-friendly+ Product Details Size 18"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 19. 75" width X 9. 75" height. Design Easy unrestricted airflow for your HVAC system 50 angled to provide maximum airflow. High Quality Solid stamped steel with counter sunk screw holes (screws included) and no sharp edges. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was just waxed.