14" x 14" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Fixed Blades with Damper accordion-title:hover { background-color: #f0f0f0

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actual front end outer dimensions are approximately 32 5/8" width X 26 5/8" height -

+ Product Details Size - 18"w X 10"h is the size for the duct opening measurement only

6" width X 7

Actual Filter Size – 17 3/4"w x 23 3/4" x 1"

14" x 14" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Fixed Blades with Damper accordion-title:hover { background-color: #f0f0f0+ 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