10" x 10" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 18" Round Duct Pipe + Product Details Size –

+ Product Details Size – 8"w X 12"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 12 5/8" width X 20 5/8" height

75" width X 29

+ Product Details Size – 12"w X 4"h is the size for the duct opening measurement only

+ Product Details Size – 16"w X 28"h is the size for the duct opening measurement only

10" x 10" - 1-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover 18" Round Duct Pipe + 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