14" x 14" - 3-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Color_Aluminum + Product Details Size -

+ Product Details Size - 12"w X 30"h is the size for the duct opening measurement only

Actual Filter Size – 9 3/4"w x 33 3/4" x 1"

from 4" to 20"

+ Product Details Size – 14" X 4" is the size for the duct opening (floor/vent hole) measurement only

High Quality – High-quality steel with counter-sunk screw holes (screws included) and no sharp edges

14" x 14" - 3-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Color_Aluminum + Product Details Size -+ Product Details Size 14" X 14" 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