The National Fire Protection Association (NFPA) suggests that NO FLAMMABLES be stored outside of an approved flammables cabinet except inside a flammables safety can. The cap-opening handle is spring-loaded and closes shut upon release. Cans are made of steel. If you cannot afford a flammables cabinet, consider these safety cans, which also feature automatic relief valves and flame arrestors in both pour and fill outlets. Meets OSHA requirements. Underwriters’ Laboratories listed. 3.8 L capacity.