Features:

• Four roller bolts in nickel plated steel. Ø 14mm. diameter.
• Three roller bolts in R201B model.
• Mechanisms protected in zinc plated steel closed case in R200B model.
• R201B has open cases that included top and bottom protective lids.
• Steel made Floor & Top Jamb strikes. Floor strike includes dust proof lid.
• Models R200B and R201B included E700L security escutcheon.
• Solid brass faceplate and steel plated strike plate.
• Backset (XX): 50mm and 60mm.