Beautiful Canadian Craftsmanship
"This unit replaced a Sterilight SQ12 that developed a bad ballast, so I am familiar with this family of UV lights. The new VH410M is meticulously crafted, the welds are perfect. The external ballast makes it easy to change to a new one should that be necessary and the monitor shows me that the lamp is working. I could have purchased this system for 200 dollars less from a warehouse retailer, but chose to go with ESP because they actually know the products."