Door Type D1 D2 D3 D4 IRONMONGERY SCHEDULE Location Ground Floor exterior door Ground Floor exterior door First Floor interior door First Floor interior door Ironmongery A B C D IRONMONGERY SET SET A 1 Bolted fixed to iron door frame SET B 1 Screw fixed to timber door frame SET C 1 2 3 SET D 1 Screw fixed to timber door frame Screw fixed to timber door frame