8"W X 4"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 9.6"W X 5.6"H] Copper Coil-Insulated Line Set + Product Details Size -

+ Product Details Size - 25"w X 16"h is the size for the duct opening measurement only

Easy clean Healthy air flow for your HVAC system - noise free components - no vibrating louvers etc

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+ Product Details Size - 34"w X 28"h is the size for the duct opening measurement only

8"W X 4"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 9.6"W X 5.6"H] Copper Coil-Insulated Line Set + Product Details Size -+ Product Details Size 8"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 9. 6" width X 5. 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,