Anderson Winterizing Duck Plug – 1 1/2 in

The Anderson Winterizing Duck Plug is a unique winter pool plumbing product that allows pool owners that do not drain the pool, the ability to still winterize the plumbing. The Anderson Manufacturing Company has a patented duck bill design, which blocks water from going into return plumbing, but also allows a flow of air to blow out the return line and relieve pressure on the plumbing during the winter.