20"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 7.25"H] Width_24in 85" width X 5

85" width X 5

The ring base allows installation without removing the thermostat

The plastic material offers a lightweight solution to any project

Actual Filter Size – 31 3/4"w x 21 3/4" x 1"

} + Product Details Size & Compatibility - The size of a boot register end is 10" X 6" X 6" galvanized floor boot end center 26-gauge

20"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 7.25"H] Width_24in 85" width X 5+ Product Details Size 20"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 21. 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