36"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 37.25"W x 5.25"H] Victorian Floor Registers with Dampers font-size: 14px

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+ Product Details Size – Duct end cap is 22" X 10" | 26-gauge galvanized steel end cap

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

+ Product Details Size – 10"w X 12"h is the size for the duct opening measurement only

36"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 37.25"W x 5.25"H] Victorian Floor Registers with Dampers font-size: 14px+ Product Details Size 36"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 37. 25" Width X 5. 25" Height. Design Designed for concealed, flush placement on your wall with a 3 8 inch space between louvers, this linear grille comes with an installation frame and clips for easy hook in assembly, ensuring a refined and seamless look. High Quality Aluminum The premium durable aluminum will never rust and it will never