The Winterizing Expansion Plugs protect and prevent ice diffusion damages to your fittings and pipes especially during winter time or off season by forming a waterlight seal to your fittings and pipes. It is highly effective and very easy to use. Winterizing Expansion Plugs come in different sizes so be sure to choose the one that matches your pool equipment.
Aladdin Replacement part of 3/4" & 1" Pipe Plug # 800-4.
3/4" and 1"