Door closers & exit hardware Door furniture Locks & cylinders 35 UNION Trade catalogue Terminology Standards EN 12209 EN 179 EN 12209 – classifies mechanically operated locks, latches and locking plates using an 11 digit coding system. Each digit refers to a particular feature of the product measured against the standard’s performance requirements. EN 179 classifies emergency exit devices operated by a lever handle or push pad using a 9 digit coding system. Each digit refers to a particular feature of the product measured against the standard’s performance requirements. BS 3621 for thief resistant lock assemblies with key egress. Insurance companies specify that security locks are tested to BS 3621 to comply with the requirements of insurance cover. Fire door testing – fire resistance within door assemblies serves three main purposes: to restrict the initial development of the fire, to restrict the spread of the fire and to protect escape routes. Whenever fitting a lockcase to a fire door it must be fire door tested and fitted with an appropriate intumescent kit. Latchbolt A bolt that is sprung and with a bevel on one face so the door can be latched shut simply by pulling it to. Follower The latchbolt is operated with a knob or handle connected via a spindle here. Keyhole Cylinder locks have larger cut-out to accept oval or euro profile cylinders here. Security box Helps to protect the bolts from attack. Strike plate Fixed to the door frame and receives the bolt and/or latch. Deadbolt A rectangular profile bolt that can only be disengaged with a key or thumbturn. Faceplate The plate which fits over the inner forend. Inner forend
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