ABLOY CY411N, D Double Cylinder Tubular Deadbolt The unique ABLOY® rotating detainer disc cylinder provides superior master-keying possibilities with vast number of combinations.It offers optimum resistance against physical attack and picking. Bolt operated by key outside and inside. Security Features UL listed products UL Burglary UL 20 min fire rating Case hardened steel cylinder housing Rotating collar Optional key lockable thumbturn 6 mm steel retaining screws High security bolt hardened steel with 2'' length 1'' (25,4 mm) throw Reinforced steel strike box Protective bolt shield SCEC endorsed for Secure Area applications Conditions of endorsement: Must be fitted with strengthening plate or fitted to steel or steel clad doors. Specification Standard Finish US26D/626 Satin chrome Fits 1 3/4" (44.5 mm) to 2 1/8" (54 mm) hole. Standard hardware for 1 3/4" (44.5 mm) thick door included. ABLOY® Cylinder Options ABLOY® PROTEC (N) ABLOY® DISKLOCK PRO (D) Bolt Options Please note: Bolts are ordered separately. LC801 Standard Bolt LC802 Drive-In Bolt Close Downloads ABLOY Tubular Deadbolts Brochure.pdf (.pdf, 305 kB) Close ABLOY PROTECSymmetrical 9 or 11 Disc.