28"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 9.25"H] Color_R-4.2 Yellow + Product Details Size –

+ Product Details Size – Size - Cuts 36mm & below

+ 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"

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

Actual Front End Outer Dimensions Are 14" Diameter

28"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 9.25"H] Color_R-4.2 Yellow + Product Details Size –+ Product Details Size 28"W X 8"H is (for duct opening measurement only); actual front end outer dimensions are 29. 25" Width X 9. 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