6" x 6" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 8" Diameter + Product Details Size -

+ Product Details Size - 24"w X 4"h is the size for the duct opening measurement only

actual front end outer dimensions are 37

actual front end outer dimensions are approximately 10 5/8" width X 30 5/8" height

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+ Product Details Size – 16" x 26" or 26" x 16" is the size for the duct opening measurement only

6" x 6" 3-WAY SUPPLY GRILLE - DUCT COVER & DIFFUSER - LOW NOISE - For Ceiling - With Opposing Damper Blades 8" Diameter + Product Details Size -+ Product Details Size 6" X 6" 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 never