6"W X 6"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 7.6"W X 7.6"H] w18h18 actual front end outer dimensions

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

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 24" or 24" x 12" duct opening (measured at the opening)

Actual Filter Size – 19 3/4"w x 29 3/4" x 1"

the second number represents the height

+ Product Details Size - 22"w X 28"h is the size for the duct opening measurement only

6"W X 6"H [Duct Opening] Aluminum Double Deflection Adjustable Air Supply HVAC Diffuser - [Outer Dimensions: 7.6"W X 7.6"H] w18h18 actual front end outer dimensions+ Product Details Size 6"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 7. 6" width X 7. 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,