12" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 13.75] Line Covers margin-right: 12px

margin-right: 12px

+ Product Details Size - 18"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are 19

Having an HVAC Access Door will give easy access to the mechanical features of the system

+ Product Details Size - 26"w X 32"h is the size for the duct opening measurement only

12" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 21.75 X 13.75] Line Covers margin-right: 12px+ Product Details Size 12" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 13. 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 wrapped