16"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] 12-Pack This 12" X 4" end

This 12" X 4" end cap is constructed with 26-gauge galvanized steel

+ Product Details Size - 40"W X 8"H is (for duct opening measurement only)

actual front end outer dimensions are approximately 32 5/8" width X 38 5/8" height

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 20" OR 20" x 24" duct opening (measured at the opening)

transparent design that complements any setting

16"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] 12-Pack This 12" X 4" end+ Product Details Size 16"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 17. 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