20" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 21.75] Color_Anodized Aluminum Upgrade your HVAC system with

Upgrade your HVAC system with our Galvanized Sheet Metal Duct Pipes today

the second number represents the length

75"H – fits a 18" X 18" duct opening

High Quality – Easy unrestricted airflow for your HVAC system - 7/8" margin turnback

scratch-resistant surface that gleams like it's just been waxed

20" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 21.75] Color_Anodized Aluminum Upgrade your HVAC system with+ Product Details Size 20"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 21. 75" height. High Quality High grade steel construction meant for high foot traffic areas. Installation Location Floor. Design Easy drop in installation. Powder Coat Finish Smooth, shiny, scratch resistant, with no sharp edges. Looks like it was just waxed. Quality Packaging Carefully shrink