Designed to comply with the Flammable Liquid Storage Regulations (1972) as appropriate & the Factory Inspection Guide HSG51 Adjustable vent meets the requirements of both Flammable Storage (vent closed) and Agrochemicals (vent open) All welded units conforming to the A.P.E.A. Construction requirements These vaults provide a half hour protection from collapse and the passage of fire Multi-lockable for high security, and fitted with a lift up action lid assisted by gas struts Middle shelves pivot on models SSV01Z and SSV02Z to enable larger items to be stored on the base level Model SSV03Z has a central partition and four shelves - the two middle shelves fold away and the two top shelves are made in 3 sections, the back section is fixed in position and the front two sections removable All models have a liquid-tight base to contain spillage Please not: A Fork Lift will be needed to unload these vaults