20" X 14" Or 14" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 15.75] Compatible With Duct 4in + Product Details Size –

+ Product Details Size – 14"w X 16"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 15 3/4" x 1"

these vent covers are built to last

SIZE & COMPATIBILITY - The size of the galvanized steel end cap is 10"

and pet dander

20" X 14" Or 14" X 20" Heavy Duty Floor Grille - Fixed Blades Air Grille- Brown [Outer Dimensions: 21.75 X 15.75] Compatible With Duct 4in + Product Details Size –+ Product Details Size 20"w X 14"h or 14" x 20" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 21. 75" width X 15. 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