14" x 14" - 3-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Grilles Installation is hassle-free

Installation is hassle-free

Actual Filter Size – 25 3/4"w x 11 3/4" x 1"

With these options

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

14" x 14" - 3-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Grilles Installation is hassle-free+ 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