ERA 90mm Standard British Standard BS3621 Nightlatch Polished Brass

  • 90mm standard case size
  • 60mm backset
  • Polished brass finish
  • Not suitable for outward opening doors
  • For 45mm - 57mm thick doors
  • Automatic deadlocking
  • Tested to BS3621:2004
  • Insurance company approved
  • Complete with 3 keys & fixings
  • Sold individually (EACH)
In stock
  • Buy 5 for £75.95 each and save 5%
  • Buy 10 for £71.96 each and save 10%
  • Buy 15 for £67.96 each and save 15%
  • Buy 20 for £63.96 each and save 20%
Unit of Sale
2-4 Working Days
Delivery information
Orders Under £20
2-3 days
Between £20 and £75
3-5 days
Orders Over £75
3-5 days
Any Value
Next Working Day
Any Value
Next Day By Noon
Any Value
Saturday Delivery
Orders for 1x Door
3-5 days
Orders for 2 or more Doors
3-5 days

Product Overview

The ERA British Standard BS3621 Nightlatch Polished Brass 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.

Other Variations

The night latch is also available in the following finishes (as the cylinder and the cylinder pull are an integral part of the BS approval they are supplied in a matching finish):

  • Polished chrome
  • Satin chrome
  • Satin nickel

It is also available with a narrow 70mm case size and some of these variations can be found in the related products.

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The latchbolt is withdrawn by the handle from inside or the key from outside.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.


  • Differs: 20,000
  • Finish warranty: 5 years, refer to finishes guide
  • 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
  • Case height 83mm, case depth 33mm

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