20"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 5.25"H] Compatible with Duct 10" Optimal Airflow: Experience 25% greater

Optimal Airflow: Experience 25% greater airflow

Designed to last up to three months depending

5” flexible joint is used to cover the parts of your HVAC line set that is placed at odd angles and hard-to-reach spaces

+ Product Details Size - 30"w X 36"h is the size for the duct opening measurement only

+ Product Details Size - 20"w X 25"h is the size for the duct opening measurement only

20"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 21.25"W x 5.25"H] Compatible with Duct 10" Optimal Airflow: Experience 25% greater+ Product Details Size 20"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 21. 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