12" x 12" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w16h16 Perfect for both residential and

Perfect for both residential and commercial use

+ Product Details Size – 30"w X 32"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 34 5/8" width X 38 5/8" height

+ Product Details Size - 25"w X 10"h is the size for the duct opening measurement only

12" x 12" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w16h16 Perfect for both residential and+ Product Details Size 12" X 12" 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