Manufactured to the same high security specification as the 3G114 this narrow stile mortice deadlock is particularly suited to doors where stile width is restricted, (e.g. glazed and French doors). Features of the 3G220 include an extra long bolt throw (20mm), hacksaw resistant rollers within the deadbolt and anti drill protection on both sides of the mortice case. Available with satin or brass finish face and key plates.