Keep water crystal clear with commercial grade clarifiers. Industry first protective device built inside sleeve turns off power when top cover is opened. Dual inlets and outlets allow for multiple plumbing options. Sight indicator shows when unit is on at a glance. UV-C grade bulbs have 9000 hour life rating. Polished stainless interior reflector increases reflection up to 35%. 2" PVC inlet/outlets — includes union connections. 15' power cord and five year limited warranty on housing.