10"W X 10"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 11.6"W X 11.6"H] Return /* Adding space between bullet

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actual front end outer dimensions are approximately 12 5/8" width X 20 5/8" height

Upgrade to a new standard of air quality and aesthetics with our Aluminum Ceiling Diffuser

actual front end outer dimensions are approximately 20 5/8" width X 24 5/8" height

+ Product Details Size – 16"w X 18"h is the size for the duct opening measurement only

10"W X 10"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 11.6"W X 11.6"H] Return /* Adding space between bullet+ Product Details Size 10"w X 10"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 6" width X 11. 6" height. Design Full Control Vertical Horizontal Air flow Direction. Horizontal blades in the front, Vertical blades in the back, both individually adjustable. High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant,