Easi-T Din Euro Profile NightlatchEasi T Din Euro Profile Night latch 60mm. The Latch bolt has the Easi T reverse function to save undoing the case so it can be reversed in seconds. British Standard BS EN 12209 and 179 Rated Sash lock used as a matter of course by the national house builders. This night latch provides a good degree of security and carries a 10 year mechanical guarantee. It has been CE and Certifire tested. Suitable for use in all domestic, industrial and commercial