BRITON 5760 DIN Euro Escape Sashlock Case 60mm BacksetThe Briton 5760 is a DIN standard euro profile escape sashlock. It has a 60mm backset with 72mm centres and a profiled latch which is reversible. One turn of a cylinder will throw the bolt 20mm. The 5760 sashlock has been fire tested to EN 1634 1 for use on fire doors up to 1hr timber 4hr steel when used with the appropriate intumescent kit (Briton 5000. IP). Escape sashlock with split follower spindle supplied Grade 316 stainless steel single piece