12" x 12" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 2-Way + Product Details Size -

+ Product Details Size - 16"w X 28"h is the size for the duct opening measurement only

+ Product Details Size - 8"w X 4"h is the size for the duct opening measurement only

[Outer Dimensions: 50

Design – Heavy gauge steel

12" x 12" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 2-Way + Product Details Size -+ 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