Review on 🚿 Attwood 4141-4 Shower Sump Pump System - Efficient 500 GPH Model, 12-Volt: Check out the 22-Inch Wire, Standard Box, and ¾-Inch Interior Diameter Outlet Hose! by Lucas Rowe

This box and pump was installed on my 43ft sailboat about 13 months ago. Has worked well for 12 months. After that, the float switch no longer switched the pump on. (You can slowly raise the float all the way by hand and nothing will happen - you'll have to "hit" it somehow for it to work.) Terrible. I had to turn it on and off manually. So I bought another pump about 30 days ago. This second pump worked fine, but the check valve caused problems pumping water out of the box. As a result, the pump turned on and worked and worked, worked and worked - sucking in air/water most of the time. So I removed the check valve. It now runs for about 2 minutes, of which only about 20 seconds are really useful. I don't think Attwood cares about quality control. (And the fitting instructions say the box has to be absolutely level, which is CRAZY for a product sold in the boat market.)