Length A: 10 Length B: 31 features: Euro profile single cylinder c/w 3 keys EPS (Extended Profile System) 6 pin mechanism EN 1303:2005 in lock security class 6 and attack resistance class 2 Suitable for EI 30 and E 30 fire and smoke control doors as standard All keys are registered at SDS and additional keys 84800 may only be obtained with initial order or subsequently using the registration form For cylinders to operate with the same key (keyed alike) add passing charge product code 83906 - see Related Products For Master keying please contact our sales team