Abstract: A fire retarding polypropylene composition comprising a copolymer of polypropylene in which ethylene/propylene rubber has been grafted onto the polypropylene chains, and at least about 50% by weight but not greater than 60% by weight of a magnesium hydroxide coated with an anionic surface active agent, the magnesium hydroxide having (i) a strain in the <101> direction of not more than 3.0×10−3, (ii) a crystallite size in the <101> direction of more than 800Å, and (iii) a specific surface area, determined by the BET method, of less than 20 mg2/g. The composition may be used in the formation of articles adapted to be used in a clean room, which pass the FMRC standards.

Abstract: A fire retarding polypropylene composition comprising a copolymer of polypropylene and an ethylene/propylene rubber, and at least about 50% by weight but not greater than 60% by weight of a magnesium hydroxide coated with an anionic surface active agent, the magnesium hydroxide having (i) a strain in the <101> direction of not more than 3.0×10−3, (ii) a crystallite size in the <101> direction of more than 800 Å, and (iii) a specific surface area, determined by the BET method, of less than 20 mg2/g. The composition can be used in a fire retarding semiconductor apparatus which passes the FMRC Clean Room Materials Flammability Test Protocol.

Abstract: A locker door retrofit assembly is disclosed which is adapted for replacing door assemblies on metallic or other lockers with a plastic door assembly. The locker door retrofit assembly may include a plastic jamb hinge that covers the existing hinge and a door assembly. The retrofit locker assembly may be assembled off-site and attached to the existing locker assembly as one unit.

Abstract: A locker door retrofit assembly is disclosed which is adapted for replacing door assemblies on metallic or other lockers with a plastic door assembly. The locker door retrofit assembly may include a plastic jamb hinge that covers the existing hinge and a door assembly. The retrofit locker assembly may be assembled off-site and attached to the existing locker assembly as one unit.

Abstract: A locker door retrofit assembly is disclosed which is adapted for replacing door assemblies on metallic or other lockers with a plastic door assembly. The locker door retrofit assembly may include a plastic jamb hinge that covers the existing hinge and a plastic jamb lock that receives a plastic door assembly when in a closed orientation.

Abstract: A locker is disclosed which comprises plastic panels and connectors on the edges of the panels for a snap together assembly that can be knocked down for shipment. A swing open front door plastic panel is also provided which preferably has a plastic hinge and plastic latch mechanism.