12" X 12" [Duct Opening] 3-Way Air Vent Adjustable Aluminum Curved Blades Integral Multi-Shutter Damper HVAC Diffuser [Outer Dimensions: 13.75"W X 13.75"H] w25h25 + Product Description Maximize the

+ Product Description Maximize the efficiency of your ventilation system with our top-of-the-line HVAC grilles and registers

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and Diffusers

actual front end outer dimensions are approximately 12 5/8" width X 16 5/8" height

Built-In Locking System – Comes with a permanently attached eight-tumbler lock and a supplied key for added security

12" X 12" [Duct Opening] 3-Way Air Vent Adjustable Aluminum Curved Blades Integral Multi-Shutter Damper HVAC Diffuser [Outer Dimensions: 13.75"W X 13.75"H] w25h25 + Product Description Maximize the+ Product Details Size 12"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are 13. 75" width X 13. 75" height. Design Individually adjusting curved blades. Multi shutter damper with handle operator to adjust air flow. Screws Included High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant, beautiful, and smooth surface, adds a