HST Synthetics Ltd
The Ultralift Undermount is the same easy-to-use cover lifter, but with an Under Mount bracket that slides under your hot tub prior to filling. No need to drill holes in the deck, patio or spa skirt. One person can easily lift the hot tub cover off and position it behind your spa from outside or inside the tub.
I was impressed with steel used, everything seems overbuilt. The coating used on the parts was also impressive and I'm expecting years of service. The whole unit is well designed, with a lot of adjustment for perfect operation. Shipping was fast and trouble free.