5 Lever BS Sashlock with 64mm or 76mm options. The Latchbolt has the Easi-T reverse function to save undoing the case so it can be reversed in seconds. British Standard BS3621 Rated Sashlock used as a matter of course by the national house builders. This lock provides a high degree of security and carries a 25 year mechanical guarantee. It has been CE and Certifire tested. Available in PVD or SSS Finish. Suitable for use in all domestic, industrial and commercial environments.