40"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 41.25"W x 5.25"H] Hi-Lo Oval Stack Head + Product Details Size –

+ Product Details Size – 12"w X 12"h

Actual Filter Size – 11 3/4"w x 7 3/4" x 1"

Ideal for both residential and commercial environments

and extends HVAC system life

+ Product Details Size – 26"w X 32"h is the size for the duct opening measurement only

40"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 41.25"W x 5.25"H] Hi-Lo Oval Stack Head + Product Details Size –+ Product Details Size 40"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 41. 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