Adjustable hinge A

Surface treatment (EG) or hot dip galvanized zinc (HDG)
Innovative design, through the channel steel nut to connect with them, the nut twist to specified torque
Suitable for longitudinal and lateral seismic application support 

Compliance with the federal specification WW - H - 171 (type B), and manufacturers' association (MSS) sp - 59-69 (type B)