Green Drain™ GD104 Black ABS Frame Waterless Trap Seal for Outlet Connection of Floor Drain Bodies, 4 in

Plumbing installations including a trap primer can be expensive to install initially and often require maintenance due to failure. When a trap primer fails, sewer gas, bugs, and unpleasant odors can enter the building through the drain. Green Drains patented, easy to install design solves these common issues as water can freely pass down through the Green Drain, but gases, bugs, and odors are blocked by the one way seal. The Green Drain is an eco-friendly solution compared to the expense and hassles associated with trap primers.