16"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] Flat Elbow Transition˚ + Product Details Size -

+ Product Details Size - 25"w X 32"h is the size for the duct opening measurement only

Regular Inspection: Periodically inspect the pump for any signs of wear or damage

+ Product Details Size – Stick-on collar is 20" and it is compatible with duct 20"

High Quality – High quality steel construction

The operable dampers

16"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 17.25"W x 5.25"H] Flat Elbow Transition˚ + Product Details Size -+ Product Details Size 16"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 17. 25" Width X 5. 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