fire extinguisher cabinet come standard with the viewing window.OO3 locks & break glass are optional extras available on reque Fire extinguisher cabinets1. Cabinets come standard with the viewing window. OO3 locks & break glass are optional extras available on request;2.Suit for a 4.5 kg fire exinguisher;3.Waterproof, UV & rust protected and non corrosive;4.Ultraviolet stable and cracks free for ...