4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] Line Covers Effortless Integration: Crafted for easy

Effortless Integration: Crafted for easy connection to supply grilles of drop ceiling T-Bar vent covers

actual front end outer dimensions are approximately 34 5/8" width X 20 5/8" height

Actual Filter Size – 24 3/4"w x 5 3/4" x 1"

making installation straightforward and hassle-free

ensuring that you find the perfect fit for your ventilation needs

4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] Line Covers Effortless Integration: Crafted for easy+ Product Details Size 4"w X 20"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 21. 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