4" Duct Connector Flange, 4 Pack Dryer Vent Wall Plate Square to Round Straight with Clamp for Air Heating Cooling Ventilation Exhaust Fan, Black Clevis & Cotter Pins Kits Specifications: Cutting Diameter: 15mm /

Specifications: Cutting Diameter: 15mm / 0

Finish: Vibration Polishing

Number of Teeth: 14

Reduction rate: 1:54

Outdoor Cooling

4" Duct Connector Flange, 4 Pack Dryer Vent Wall Plate Square to Round Straight with Clamp for Air Heating Cooling Ventilation Exhaust Fan, Black Clevis & Cotter Pins Kits Specifications: Cutting Diameter: 15mm /The duct connector flange is perfect for connecting your tumble dryer, bathroom or kitchen exhaust fan, soilless cultivation system, inline duct fans, range hood, or kitchen hood to a ventilation system. It is designed to facilitate the smooth and efficient flow of air, ensuring that your appliances work effectively and your indoor air quality is maintained. Specification Color: Black Material: ABS Plastic Outer Diameter of Interface: 97mm 3. 82 inch