44"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 45.25"W x 7.25"H] Height_10in + Product Details Size -

+ Product Details Size - 20"W X 8"H is (for duct opening measurement only)

+ Product Details Size – 34"w X 28"h is the size for the duct opening measurement only

High Quality – A uniquie combination of cotton & synthetic fibers gives you the most filtration and the least air resistance - equals great air & easy airflow for your system

Measure the size of the vent opening

44"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 45.25"W x 7.25"H] Height_10in + Product Details Size -+ Product Details Size 44"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 45. 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