48"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 7.25"H] Width_20in + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 6" x 18" or 18" x 6" duct opening (measured at the opening)

Actual Filter Size – 31 3/4"w x 35 3/4" x 1"

These grilles and registers give you an extra measure of quality that you can point out to your family members and house guests

and squirrels

875" width X 21

48"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 7.25"H] Width_20in + Product Details Perfect Fit+ Product Details Size 48"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 49. 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