This sump box features an air vent to prevent air locks, slotted mounts for easy installation & removal, a straight mesh filter to provide easy removal for cleaning and pre-installed inlet fittings instead of a shared manifold so additional fittings can easily be added if needed. A reliable Attwood Sahara pump automatically pumps the box dry. Gasketed lid easily snaps on and off and the seal protects against overflow. 36″ wire leads.3/4″ Pump outlet. Choice of 3/4″, 1″, 1-1/8″, & 1-1/2″ inlets for easy connection from up to 3 drains including a head sink, shower drain & galley sink.