A New Model Available Exclusively from American Fiberglass Pools. The Frio is one of the largest fiberglass pools available in the world. A diving capable pool that is 18 ft. wide and 42 ft. long. As they say in Texas, the Frio is the "Muy Grande" of the fiberglass pool industry. Almost 750 sq. ft. of cool, clear, refreshing water. The Frio not only allows diving, but has a huge shallow area of almost 325 sq. ft. The steps and seats are designed not to interfere with the shallow end activities. Do you think big? Then consider the Frio, they do not make them any bigger.