10" x 10" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Color_Red Oak + Product Details Perfect Fit

+ Product Details Perfect Fit & Easy Sizing - Designed for a 16" x 25" OR 25" X 16" duct opening (measured at the opening)

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

10"w X 6"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size - 4"w X 16"h is the size for the duct opening measurement only

10" x 10" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover Color_Red Oak + Product Details Perfect Fit+ Product Details Size 10" X 10" is the size for the duct opening measurement only, actual front end outer dimensions are 3". Design Equipped with lever for full airflow control; back blades made of black plastic for reduced air noise and discreet appearance; "Opposing" back blades, ensuring they don't overlap, provide precise damper control and superior air dispersion. High Quality Aluminum The premium durable aluminum will never rust and it will