48"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 5.25"H] return filter Actual Filter Size – 27

Actual Filter Size – 27 3/4"w x 33 3/4" x 1"

and stainless steel tubes

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 12" X 6" X 8"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 10" x 26" or 26" x 10" duct opening (measured at the opening)

+ Product Details Size – 18" x 30" or 30" x 18" is the size for the duct opening measurement only

48"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 5.25"H] return filter Actual Filter Size – 27+ Product Details Size 48"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 49. 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