48"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 7.25"H] white description-text { font-family: Arial

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+ Product Details Size – The size 30-gauge stick-on collar is 5" and it is compatible with duct 5"

+ Product Details Size – 40"w X 20"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 27 5/8" width X 34 5/8" height

Adjustable airflow control – Adjustable airflow control: The system allows users to customize the amount of air supply

48"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 49.25"W x 7.25"H] white description-text { font-family: Arial+ 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