The Asec 5 Lever British Standard Sashlock complies to BS 3621 and it is ideal for use on high security applications such as external doors. Once installed pushing down on the door handle will retract the top latch and using the key will operate the bottom bolt. It comes complete with a 10 year guarantee, 2 keys and full fitting instructions. Available in Stainless Steel (Silver) or Polished Brass finishes and 64mm (2.5 Inch) or 76mm (3 Inch) lock cases. The latch bolt is easily reversible. It is insurance approved and police approved and compliant to BS3621:2007 (kitemarked). Features a brass bolt with hardened-steel rollers to resist saw attacks. Supplied complete with both forend & strike plates. Suitable for both sprung & unsprung handles. Bolt through design. This type of lock is generally selected for exterior doors when an insurance rated lock is required. The lock contains bolt through holes either side of the spindle hole, which enable use of the through bolts supplied with our lever on rose handles. The steel case has an integral anti-drill plate on cap & case. The brass deadbolt has 2 hardened steel inserts. Manufacturer: Asec.