The DG firewall hanger series installs on a 2-hr. wood stud firewall during framing—before the drywall is in place. The series includes three models of top-flange hangers that connect floor joists to the wood wall and provide enough space for two layers or 5/8-in. drywall to be installed later. The completed firewall assembly remains continuous from floor to floor. The hangers are tested to ASTM E814 standards and received F (flame) and T (temperature ratings for use on either or both sides of a wall.