6" x 6" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 12in diameter this model allows for mounting

this model allows for mounting without removing the thermostat

Can be hooked up with our "Butterfly Dampers" for precise airflow control

[Outer Dimensions: 18

High Quality ABS Plastic - Will Last Forever & NEVER RUST

+ Product Details Size - 28"w X 14"h is the size for the duct opening measurement only

6" x 6" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 12in diameter this model allows for mounting+ 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