The Trojan QS-012 is a replacement quartz sleeve used in the following models of UV water filter systems:
The Trojan Sterilight QS-012 Replacement Quartz Sleeve is made with 100% fused silica. This Sterilight quartz sleeve surrounds the UV lamp, providing protection from the water surrounding it, and also tranmitting light from the lamp to the water. This UV quartz sleeve measures 35 inches x .8 inches x .9 inches.
The Trojan QS-012 specifications: