14" x 14" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Aluminum actual front end outer dimensions

actual front end outer dimensions are approximately 22 5/8" width X 22 5/8" height

Actual Filter Size – 31 3/4"w x 27 3/4" x 1"

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

The total outer size of this grille is the listed size plus 2 and 5/8"

+ Product Details Size – 12" x 12" is the size for the duct opening measurement only

14" x 14" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Aluminum actual front end outer dimensions+ 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