Products Products Yale Door Lock-sets Deadbolts Standard Duty Deadbolts 8111 - Yale 8100 Series Standard Duty Deadbolt (Single Cylinder with Thumb turn) 8111 - Yale 8100 Series Standard Duty Deadbolt (Single Cylinder with Thumb turn) Other similar products 8101 - Yale 8100 Series Standard Duty Deadbolt (One side Deadbolt)8100 deadbolt series is an economical durable deadbolt, i… 8121 - Yale 8100 Series Standard Duty Deadbolt (Double Cylinder Deadbolt)8100 deadbolt series is an economical durable deadbolt, i…