POWERFUL & RELIABLE -55W Whole House 12 GPM U-V Water Filtration Unit. 100-140 v / 50-60 Hz. COMPLETE WATER SYSTEM -Equip with Stainless steel 304 chamber with 1.0 inch MNPT inlet / outlet, 1pc electronic ballast with audible and visual alarm, 3 pcs UV bulb, 3 pcs quartz sleeve, 3 pcs fixed clamp. LONG LASTING -Last 9000 hours min, Works night and day, 24/7, consistently keeps water safe. FEED WATER PRESSURE: 40 – 80 PSI. PH:3.0 -11.0. MAX TDS :500 PPM. Shelf life: 3 Years. What is dimension of installed Geekpure U-V Water Filter? Please leave space 38? What is in the box? There is 1pc stainless steel 304 vessel, 1pcs UV bulb, 1pcs quartz sleeve, 3pcs fixed clamp, 1pc ballast and user manual in the box. It Is Recommended to Wait Until the Entire System Is Pressurized and Re-Check for Any Leaks Before Leaving Installation Site. The First 2 Gallons of Water Produced Should Not Be Used.