Hard top cover A cover used on pools, spas and hot tubs that rests on the lip (coping) of the pool or spa deck, not a flotation cover, used as a barrier to swimmers and bathers, for maintenance and thermal protection. Winter cover A cover that is secured around the perimeter of a pool, spa or hot tub that provides a barrier to bathers and debris when the pool, spa or hot tub is closed for the season. Solar cover A cover that when placed on the water's surface of a pool, spa or hot tub, increases the water temperature by absorption and transmission of solar radiation, reduces evaporation and prevents wind-borne debris from entering the water.
clear materials that allow sunlight to pass into solar collectors and trap heat inside the collectors.
Hardtop, a cover used on spas and hot tubs that rests on the lip (coping) of the pool or spa deck, not a flotation cover. Used as a barrier to swimmers and bathers, and for maintenance and thermal protection. Solar, a cover that, when placed on the water's surface of a spa or hot tub, increases the water temperature by absorption and transmission of solar radiation; reduces evaporation and prevents wind-borne debris from entering the water. Winter, A cover that is secured around the perimeter of a spa or hot tub that provides a barrier to bathers and debris when the spa or hot tub is closed for the season.