Save energy while maintaining your warm temperature with the Intex energy-efficient replacement spa cover. This hot tub cover by Intex is compatible with any of their round, 4-person bubble massage models. The cover not only keeps out dirt and debris but also saves energy by keeping the heat inside the tub when not in use. You'll save 50% more energy, which will save you an average of 288 dollars per year. This is easy to throw on your backyard oasis after a nice long soak, so you won't have to worry about working up a sweat. Keep your hot tub hot and save energy with the Intex energy-efficient spa replacement cover.