HVAC Round Metal Inlet Outlet Elbow Bend Ventilation Dryer Vent Pipe Fitting. Customizable HVAC Duct: Offers full, minor, and flexible customization from designs for HVAC systems. Galvanized Metal Material: Constructed from durable galvanized sheet metal for ventilation and firefighting use. Professional OEM/ODM: Supports OEM and ODM services with dedicated R&D and design teams. 1-Year Warranty: Provides a 1-year warranty with free replacement for defective accessories. Fast Delivery Options: Samples and stock orders ship in 1-7 days; OEM takes 12-20 days. Global Shipping: Supports DHL, UPS, EMS, FedEx, air freight, and sea freight worldwide. Free Design Services: Includes free design assistance along with photo and video shooting support. Flexible Payment Terms: Accepts T/T, Western Union, PayPal, LC, D/P, and small-amount payments.