HVAC System Part Ventilation Pressed Duct Round Collar Saddle Take. OEM/ODM Customization: Supports full, minor, and flexible customization from designs. Galvanized Material: Made of durable galvanized sheet for HVAC ventilation systems. 1-Year Warranty: Free replacement of defective accessories in the next order. Fast Delivery: Samples/Stock: 1-7 days; OEM: 12-20 days after payment. Low MOQ: Minimum order quantity is only 200 pieces. Global Shipping: Supported by DHL, UPS, FedEx, Air, and Sea freight. Professional R&D: Expert team for design and production of new HVAC products. Flexible Payment: Accepts T/T, Western Union, PayPal, LC, and D/P.