Equinox Spas EQ630L-220-SMB 79" x 79" x 34" 5 Persons 30 Jet Spa Sterling Marble Interior/Black Exterior with Lounger 293 gal (1,108L.) Includes 4.5 HP Pump and 4kw Heater. Every Equinox spa starts with a solid foundation. The polyethylene floor seals out critters and moisture while sealing in the heat. Integrated into the sealed floor is our galvanized steel frame. Engineered to provide the strength and stability required to support over 7000lbs. Unlike wood frames, our galvanized steel structure is built to last. Not only is it 10 times stronger than wood, it will not crack, warp or rot and unlike wood it will not sustain termites or rodents.