The CAT25 is a totally self-contained underground disaster shelter designed to protect 25 to 50 people.

Complete protection from tornadoes, hurricanes, earthquakes, storms, forest fires, power failures, and nuclear power plant accidents.

A tremendous effort has been made to think of every conceivable incident that shelterists could face in the CAT25 shelter. Many geometrical shapes were experimented with before finalizing the CAT25.

The CAT25 includes the fiberglass toroidal structure, fiberglass entranceway, fiberglass/composite hatch, MCAS air filtration system for nuclear-biological-chemical environments, septic system, fiberglass water tank, fiberglass flooring, fiberglass counter, fiberglass shower walls, fiberglass battery housings, two toilets, Forty 12- volt deep cycle batteries, air blower, gray water tanks, all wiring, and all plumbing, etc.