44"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 45.25"W x 5.25"H] Compatible With Duct 4in while a waterproof base ensures 4 X 12 Is CRFG2028 Width_14in

while a waterproof base ensures protection against rust and damage

Compatible with 24x24 openings and built from durable

+ Product Details Size – 22"w X 14"h is the size for the duct opening measurement only

ensuring it arrives at your home in perfect condition

+ Product Details Size – 8" x 12" or 12" x 8" is the size for the duct opening measurement only

44"W X 4"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 45.25"W x 5.25"H] Compatible With Duct 4in while a waterproof base ensures 4 X 12 Is CRFG2028 Width_14in while a waterproof base ensures protection against rust and damage Compatible with 24x24 openings and built from durable