Featuring pre drilled holes and a 3 inch diameter, the flange simplifies installation while maintaining compatibility with dryer vents, exhaust, and HVAC ductwork Perfectly adapts to dryer vents, bathroom / kitchen exhaust systems, or heating / cooling ducts to simplify airflows management in homes, laundromats, or workshops Ideal for homeowners, enthusiasts, and HVAC professional seeking stable fittings for residential or light commercial ventilation upgrades Crafted from strong ABS with a seamless circular design, these 2 piece duct connector flanges secure long lasting for secure ventilation systems connection Engineered for general compatibility, this ABS flange secure leak easy joints in 3 inch duct systems, combining structural rigidity with hassle easy maintenance, Manufacturer: Ahmany