4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] Height_22in the second number represents the

the second number represents the width

Applications – The galvanized steel round duct is used to cut into a plenum or rectangular duct to begin a trunk line or branch-like runs

+ Product Description Introducing the 2-coned supply grille for a T-bar lay-in

+ Product Description Secure your thermostat with the heavy-duty Beige Metal Thermostat Guard

Designed with practicality in mind

4" X 20" Or 20" X 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 21.75] Height_22in the second number represents the+ 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