40"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 41.25"W x 7.25"H] Side Out Ceiling Register Box + Product Details Size –

+ Product Details Size – 18"w X 25"h is the size for the duct opening measurement only

+ Product Details Size - 22"w X 16"h X 2"d (for duct opening measurement only)

Proudly made in the USA

actual front end outer dimensions are approximately 28 5/8" width X 28 5/8" height

40"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 41.25"W x 7.25"H] Side Out Ceiling Register Box + Product Details Size –+ Product Details Size 40"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 41. 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