32"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 33.25"W x 7.25"H] Drop Ceilings / Lay-In + Product Details Size –

+ Product Details Size – 4"h X 8"h is the size for the duct opening measurement only

+ Product Details Size & Compatibility – The size of the side round ceiling box is 10" X 10" X 7" and it is compatible with duct 7"

Actual Filter Size – 11 3/4"w x 15 3/4" x 1"

+ Product Details Size – 20" x 36" or 36" x 20" is the size for the duct opening measurement only

32"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 33.25"W x 7.25"H] Drop Ceilings / Lay-In + Product Details Size –+ Product Details Size 32"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 33. 25" Width X 7. 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