Hinge #7, standard 11 gauge, zinc plated, wide body. Used between sections 7 and 8 on very tall garage doors. The #7 has a larger offset so the roller sits in the right position as the door moves through the track. If your old hinge is bent, cracked, or worn out, replace it and match the number stamped on the original hinge before ordering. The zinc plated finish helps resist rust, and the wide body design gives the hinge extra strength for heavy doors and frequent use.