8" X 18" Or 18" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 19.75] w20h20 our kit surpasses the required

our kit surpasses the required 700 PSI for R410

Whether replacing an old register or installing a new vent

actual front end outer dimensions are approximately 12 5/8" width X 30 5/8" height

Actual Filter Size – 21 3/4"w x 17 3/4" x 1"

Universal Fit – Measures 6" wide x 3-1-13/16" high x 3-1/8" deep

8" X 18" Or 18" X 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 19.75] w20h20 our kit surpasses the required+ Product Details Size 8"w X 18"h or 18" x 8" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 75" width X 19. 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