Posted By James Goodstadt Mike, BS5306 part 8:2000 states the following: 7 Siting of extinguishers 7.1 Location Normally, extinguishers should be located in conspicuous positions on brackets or stands where they will be readily seen by persons following an escape route. Siting positions near to room exits, corridors, stairways, lobbies and landings are most suitable. Extinguishers should not be located where a potential fire might prevent access to them. Where it is required by the Fire Precautions (Workplace) Regulations as amended [3] or otherwise considered advisable, attention should be drawn to the position of extinguishers where necessary by signs, and the user should keep a record (conveniently on a plan) of the type, number and location of the extinguishers. NOTE Fire safety signs are specified in BS 5499-1. 7.2 Mounting Small extinguishers with a total weight up to and including 4 kg should be mounted so as to position the handle about 1.5 m from the floor but the carrying handle of larger, heavier extinguishers should be about 1 m from the floor. Care should be taken to ensure that a heavy extinguisher does not itself cause injuries by being dislodged and falling onto limbs or bodies. Extinguishers installed under conditions where they are subject to dislodgement should be installed in specifically designed brackets. Extinguishers sited in schools require extra thought to avoid such accidents and the use of recessed housings should be considered. Any mounting bracket used should conform to BS EN 3-5, clause 6. I hope this helps. James