28"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 5.25"H] w25h25 High Quality – Commercial grade 10in diameter 75 Plenum Box Depth 1267FLR90

High Quality – Commercial grade aluminum - will never rust - designed for warehouses

+ Product Details Size & Compatibility – The size of galvanized sheet metal oval stack head with collar is 12" X 6" - 6" and it is compatible with Duct 6"

ensuring a secure connection

[Outer Dimensions: 32

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28"W X 4"H [Duct Opening] Linear Aluminum Clip On Bar Return Air Grille [Outer Dimensions: 29.25"W x 5.25"H] w25h25 High Quality – Commercial grade 10in diameter 75 Plenum Box Depth 1267FLR90 High Quality – Commercial grade aluminum will never rust designed for warehouses + Product Details Size & Compatibility – The size of galvanized sheet metal oval stack head with collar is 12" X 6" 6" and it is compatible with Duct 6"