28"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 7.25"H] w10h10 + Product Details Size - 190RF 10X20 FBA crafted from heavy gauge Compatible With Duct 7in

+ Product Details Size - 36"w X 6"h X 2"d (for duct opening measurement only)

Crafted from solid stamped steel

+ Product Details Size – 40"w X 10"h is the size for the duct opening measurement only

and you'll have seamless access to your system's vital components

Premium Quality – Our rectangular duct cap is made of high-quality galvanized sheet metal material (galvanized steel construction for durability and rust prevention)

28"W X 6"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 29.25"W x 7.25"H] w10h10 + Product Details Size 190RF 10X20 FBA crafted from heavy gauge Compatible With Duct 7in + Product Details Size 36"w X 6"h X 2"d (for duct opening measurement only) Crafted from solid stamped steel