20" X 25" Or 25" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 26.75] Blade Whether you need to create

Whether you need to create trunk lines or branch-like runs

optimal efficiency

+ Product Details Size – 36"w X 30"h is the size for the duct opening measurement only

The total outer size of this grille is the listed size plus 3"

+ Product Details Size - 28"w X 22"h is the size for the duct opening measurement only

20" X 25" Or 25" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 26.75] Blade Whether you need to create+ Product Details Size 20"w X 25"h o 25" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 26. 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