30"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 9.75"H] 18" Diameter this grille is a testament

this grille is a testament to high standard craftsmanship

you can watch this informative video tutorial: How to Measure Your Vent Hole Before Ordering a Grille

Design – Cubic core eggcrate design Offers highest airflow efficiency at almost 95%

+How To Measure A Grille Overall Size:

30"W X 8"H [Duct Opening] Steel Air Vent Return Grille - HVAC VENT DUCT COVER DIFFUSER - [Outer Dimensions: 31.75"W X 9.75"H] 18" Diameter this grille is a testament+ Product Details Size 30"w X 8"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 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.