10"W X 4"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 11.6"W X 5.6"H] w30h30 + Product Details Size –

+ Product Details Size – 34"w X 10"h is the size for the duct opening measurement only

+ Product Details Size – 8"w X 10"h is the size for the duct opening measurement only

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

Actual Filter Size – 33 3/4"w x 35 3/4" x 1"

10"W X 4"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 11.6"W X 5.6"H] w30h30 + Product Details Size –+ Product Details Size 10"w X 4"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 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,