Fire Hose Cabinet Sign Metal Plate – English & Arabic Letters, Fire Hose signs are placed around the area where the fire hose is located. A fire hose is a high-pressure hose that carries water or another fire retardant (such as foam) to a fire to extinguish it. Outdoors, it attaches either to a fire engine or a fire hydrant. Indoors, it can permanently attach to a building’s standpipe or plumbing system.