4813 - Single cylinder (inside) Application For use with ASSA Modular and Connect lockcases. Specification The cylinder is fixed with four high security hardened steel screws, supplied with the accessory set.ASSA accessories must be used. Finish Standards Downloads 4813 - Single cylinder (inside) (.pdf, 55 kB) Close 4811 - Single cylinder (outside)For use with ASSA Modular and Connect lockcases. 4812 - Double cylinderFor use with ASSA Modular and Connect lockcases.