20"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 7.25"H] w24h24 Dimensions With Outer End are

Dimensions With Outer End are 17

+ Product Details Size - 30"w X 40"h is the size for the duct opening measurement only

this thermostat guard combines dependable security with a professional and attractive appearance

+ Product Details Size - 8"w X 32"h X 2"d (for duct opening measurement only)

20"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 7.25"H] w24h24 Dimensions With Outer End are+ 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