assaabloy.com 355 Lockcases Introduction Is it a rebated doorset? A rebate kit is an ironmongery accessory that is used to enable a lock or latch mechanism to be fitted correctly on a pair of double opening rebated doors. The term ‘rebated doors’ is used to describe a set of two doors which have been cut, or rebated, into one another. To do this, half of the ‘thickness’ of the face of each door is channeled out, usually by 13mm, but also by 19mm or 25mm, so that when they close, the doors interlock into one another. This ensures a neat and solid fit when closed, and will help to prevent the two doors from warping away from each other after fitting. Lockcase profiles UK lockcases These are the standard profile of lockcases traditionally used within the UK, featuring centres of 47.5mm (Euro profile), 48.5mm (oval profile) or 57mm (lever profile). DIN lockcases DIN style refers to Euro profile lockcase ranges that feature 72mm centres. The longer clearance between handle and keyway improves access for all. Scandinavian lockcases Scandinavian lockcases are similar to UK style lockcases however, the cylinder is located above the lever handles ensuring more space for using the cylinder. They accommodate a Scandinavian oval profile and feature 111mm centres. Legislation BS 3621 – Thief resistant lock assembly – key egress BS 3621 requires security from both sides, meaning that, once locked, a key is always required to open the door, from the inside or the outside. BS 3621 approval is denoted via Kitemark and applies to the lock and all supplied accessories; changing the keep or cylinder will invalidate the approval often required by insurance policies etc. Where there is a greater need for safety concerns to be addressed, please refer to BS 8621, approved keyless egress, locks which are secure only from the outside. EN 12209 – Locks and latches Fundamental to this standard is a comprehensive classification system for assessing the wide range of products needed to satisfy the diverse requirements of the European market. Features assessed include normal use (and abuse) forces, long-term durability, fire/smoke resistance, corrosion and temperature resistance and security, both manipulative and physical. In addition, it contains information on marking, including CE marking because EN 12209:2003 is a harmonised standard. Please be aware a 2016 version has been published, however, is not harmonised. It is CE marking to the 2003 revision that is a legal requirement for locks to be fitted to a fire door. BS 8300-2:2018 – design of an accessible and inclusive built environment BS 8300 considerations for lockcases include: The minimum distance from the door edge to the centre of the keyway (backset) should be 54mm T he distance between the handle follower and the centre of the keyway (lock centres) should be a minimum of 72mm unless the keyway is positioned above the handle Lever handles should be used wherever possible in conjunction with an upright mortice lock/latch More details on BS 8300 can be found in the Standards and legislation section. Other important legislation EN 179 – Further information can be found in the introduction of the panic and emergency hardware section Further legislation and certification information can be found in the Standards and legislation section
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