20" X 24" Or 24" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 25.75] 4" Round Duct Pipe Simply cut into the frame

Simply cut into the frame of your wall and the metal duct where your HVAC system is located

actual front end outer dimensions are approximately 21

What Is A MERV Rating

ensuring durability in temperatures ranging from -40℃ to 120℃

20" X 24" Or 24" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 25.75] 4" Round Duct Pipe Simply cut into the frame+ Product Details Size 20"w X 24"h or 24" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 25. 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