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 + Product Details Size –

+ Product Details Size – The size 30-gauge stick-on collar is 8" and it is compatible with duct 8"

85" width X 5

Round-neck-to-square-face construction results in 360 degree air diffusion pattern similar to a full round diffuser

The ring base allows installation without removing the thermostat

actual front end outer dimensions are 33

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 + Product Details Size –+ 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