10" x 10" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 10" Diameter + Product Details Size –

+ Product Details Size – 26"w X 24"h is the size for the duct opening measurement only

+ Product Details Size – 10"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 21 3/4"w x 19 3/4" x 1"

+ Product Details Size – 36"w X 20"h is the size for the duct opening measurement only

Measure the size of the air duct/drywall opening

10" x 10" - Corner Direction Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 10" Diameter + Product Details Size –+ 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