10" x 10" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control w28h28 /* Adding space between bullet

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+ Product Details Size - 4"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 13

+ Product Details Size - 36"w X 24"h X 2"d (for duct opening measurement only)

10" x 10" 2-WAY ALUMINUM BAR CEILING DIFFUSER - Vent Duct Cover - With Opposing Dampers via Lever Control w28h28 /* Adding space between bullet+ Product Details Size 10" X 10" is the size for the duct opening measurement only, actual front end outer dimensions are 3". Design Equipped with lever for full airflow control; back blades made of black plastic for reduced air noise and discreet appearance; "Opposing" back blades, ensuring they don't overlap, provide precise damper control and superior air dispersion. High Quality Aluminum The premium durable aluminum will never rust and it will