DORMA D800 / DB600 Series Dead Bolts

Heavy Duty and Grade 2 Dead Bolts
The D800 Grade 1 Heavy-Duty Dead Bolt and the DB600 Grade 2 Dead Bolt for increased security, reliability and durability.  These rugged dead bolts provide an added level of protection.UL/CUL listed for use on 3 hour rated fire doorsOptional patented key system availableReinforced to protect against attacks