Carlisle Brass Easi-Keep Latch Polished Chrome is a latest technology for the simple aid of locking self-closing doors. The tubular latch lifts the cam as the door closes and falls behind by securing the door in locked position. The door lever handle is used to retract latch and open door. The product measures 63 x 39 x 10mm (L x W x D). It is fire tested and meets the requirement of BS 476:PART 22:1987. CE Marked. Corrosion resistant. Designed to eliminate resistance between spring loaded latch bolt and a conventional strike plate.