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ERA British Standard BS3621 Nightlatch

Insurance Company Approved

  • Automatic deadlocking
  • Standard or narrow case width
  • Tested to BS3621:2004
  • Insurance company approved
  • 70mm or 90mm case size
  • Door thickness 45-57mm
  • 20,000 differs
  • For Inward Opening Doors

Price: £43.00 Save £15.79 RRP: £58.79

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The ERA British Standard 3621 nightlatch is based upon the ever popular ERA 183/193 nightlatch range, with the addition of an anti-tamper anti-drill cylinder cover and pull.  Robustly designed it is ideal for front door and side entrance doors.  However, although the lock is insurance company approved we would still recommend fitting a 5 lever deadlock to give added security.

Latchbolt Lock Operation

The latchbolt is withdrawn by the handle from inside or the key from outside. The handle can be deadlocked by a turn of the key from either inside or outside and the hold back facility can be operated by rotating the handle and depressing the pushbutton. Entry by key is always possible from outside whether the handle is locked or not and the holdback facility is released by rotating the handle.

Contemporary Metallic Finishes

The ERA BS3621 nightlatch is available in a range of finishes including brass, polished chrome, satin chrome and satin nickel. As the cylinder and the cylinder pull are an integral part of the BS approval they are supplied in a matching finish.




  • Differs: 20,000
  • Finish warranty: 5 years, refer to finishes guide
  • Finish: Polished brass, polished crome, satin chrome or satin nickel. External cylinder in matching finish
  • Fixings: All necessary fixings included
  • Keys supplied: 3
  • Marks of conformity: BS EN 3621:2004. Insurance company approved
  • Material: Cast body & solid brass cylinder
  • Door thickness 45-57mm
  • Mechanical warranty: 5 years
  • Operation: key entry from outside, handle can be deadlocked from inside or outside
  • Packaging: Sold individually, complete with full fitting instructions
  • Rebates: n/a
  • Size: standard case width 90mm or narrow case width 70mm. Case height 83mm, case depth 33mm