3 4 Inch Standard Condensate Trap with Cleaning Brush and SS3 Condensate Overflow Float Switch Combo Kit for HVAC Systems, Air Conditioner workwarehouse We have done critical actions Style:10KAIC We have done critical actions for establishing a sustainable and stable supply chain for low cost high power products by the way of reducing light earth elements and avoiding using Tb(terbium) Please contact us by email in time if you have any questions stopping the backflow of condensed water Precision Design: the condensate p trap with a clear PVC U shaped pipe and openable blue caps makes you easily inspect if sediment builds to block the trap and easily open it for cleaning and a 16 inch flexible brush