Roller Bolt Nightlatch Case Only The Roller Bolt Nightlatch has a roller bolt which holds the door in position when unlocked, preventing you from being locked out if the door closes. Suitable for Doors from 35mm to 60mm Backset 60mm Thumb turn handle withdraws and throws roller bolt Cylinder withdraws and throws roller bolt Roller Bolt holds door in position when unlocked Meets the recommendations of BS 5588 Fire Tested BS 1634-1 2000 30 mins Available in various finishes
