4" X 16" or 16" x 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 17.75] Adjustable Return 75"H – fits a 16"

75"H – fits a 16" X 16" duct opening

Say goodbye to low-quality fiberglass filters below MERV 4

Featuring a multi-shutter damper with an easy-access lever

+ Product Details Size - 36"w X 22"h X 2"d (for duct opening measurement only)

Seamless Installation: Designed to fit seamlessly into a 24 by 24 inch opening

4" X 16" or 16" x 4" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 5.75 X 17.75] Adjustable Return 75"H – fits a 16"+ Product Details Size 4"w X 16"h or 16" x 4" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 5. 75" width X 17. 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