12" x 12" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w18h18 + Product Details Size –

+ Product Details Size – 10"w X 26"h is the size for the duct opening measurement only

+ Product Details Size – 12" x 30" or 30" x 12" is the size for the duct opening measurement only

no questions asked

actual front end outer dimensions are approximately 36 5/8" width X 32 5/8" height

75"H – fits a 12" X 12" duct opening

12" x 12" - 2-Way Extruded Aluminum Ceiling Diffuser Square - HVAC Vent Cover w18h18 + Product Details Size –+ Product Details Size 12" X 12" 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