MATERIAL:SteelTYPE:Mortice sash lockSTYLE:5 leverFINISH:Nickel or Brass PlatedFIXINGS:All fixings includedADDITIONAL FEATURES:BS 3621:2007 rating. Supplied with 2 keys Description High qualityBritishstandard certified five lever mortice door sash lock Ultra secure - 5 ...Read More
MATERIAL:Steel
TYPE:Mortice sash lock
STYLE:5 lever
FINISH:Nickel or Brass Plated
FIXINGS:All fixings included
ADDITIONAL FEATURES:BS 3621:2007 rating. Supplied with 2 keys
CASE WIDTH:63mm / 75mm
CASE HEIGHT:110mm
CASE DEPTH: 15mm
FOREND LENGTH:161mm
FOREND WIDTH:26mm
BACKSET:44mm (handle will sit 4.4cm from door edge) / 57mm(handle will sit 5.7cm from door edge)
Each digit refers to a particular feature of the product measured against the standards performance requirements.
DIGIT 1 : Category of Use
Three grades are identified:
Grade 1 - Low frequency of use with a high incentive to exercise care and a small chance of misuse, e.g. internal residential doors
Grade 2 - Medium frequency of use by people with some incentive to exercise care but where there is some chance of misuse, e.g. internal office doors
Grade 3 - High frequency of use by public or others with little incentive to exercise care and with a high chance of misuse, e.g. public doors
DIGIT 2 : Durability
Twelve grades are identified with maximum figures for deadbolt and snib operation, and latch bolt operation with and without side load.
DIGIT 3 : Door Mass and closing force
Nine grades are identified with maximum figures for closing force at various door masses. Note: Closing force is from a standing start: i.e. fully extended latch bolt in contact with striking plate at start of test.
DIGIT 4 : Fire resistance
Two grades are identified for single axis hinges:
Grade 0 - Not approved for use on fire/smoke door assemblies
Grade 1 - Suitable for use on fire/smoke door assemblies and tested to BS EN 1634-1 etc
DIGIT 5 : Safety
(N/A)
DIGIT 6 : Corrosion resistance
Eight grades are identified neutral salt-spray with and without temperature resistance
DIGIT 7 : Security
Seven grades are identified with maximum figures relating to physical attack, with or without drilling.
DIGIT 8 : Field of door application
Fifteen grades are identified for differing applications - hinged or sliding doors with rim or mortice locks with either keyless egress from inside or key locking from both sides. The grading determines which application is appropriate. In addition, there is a requirement that lock/latch should not be removable from outside or, for grades K to R, from inside using "standard" tools. Grades H and P require support for the lock case when installed.
DIGIT 9 : Type of key operation and locking
Nine grades are identified for differing types of keys operation. The grading determines how the lock is assessed for deadlocking. There is a maximum key torque operating requirement of 1.5Nm and a minimum key strength requirement of 2.5Nm.
DIGIT 10 : Type of spindle operation
Nine grades are identified relating to the number of differs and levers:
Digit 11 : Key identification
9 grades are identified relating to the number of differs and levers, grade 0 relates to a latch with no locking action.
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