16"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 9.25"H] 12-Pack Ensure the pump is properly

Ensure the pump is properly secured to the mounting surface

+ Product Details Size – 16"w X 26"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 35 3/4" x 1"

+ Product Details Size & Compatibility – The size of the wall angle register boot is 10" X 6" X 6 and it is compatible with duct 6"

+ Product Details Size – Sheet metal duct board take off start collar is 18" and it is compatible with duct 18"

16"W X 8"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 9.25"H] 12-Pack Ensure the pump is properly+ Product Details Size 16"W X 8"H is (for duct opening measurement only); actual front end outer dimensions are 17. 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