Inline Outlet The Inline Outlet is to be used in the Storm Drain to allow the drain to be connected inline with a 110mm uPVC drainage pipe instead of sending the pipe down through the storm drain. Idealing the installer should use a Sump box and Leaf Guard when using an inline outlet to prevent debris from entering the uPVC drainage pipe and causing blockages. Price: £2.20 (Excluding VAT at 20%) Quantity: