Industrial door including:panel,accessory and motor,operated with Manual and motornized,widely use in workshop,warehouse etc. Dacheng brand industrial doorWe ... all nessory part for full set door. 3.Track:2" Hot-dipped galvanized.single track for headroom above 35mm. 4.Hinge ... ,bracket,balance pole(Solid shaft),seal,cable drum,torsion.track connector 6.Spring block,safty airbag,round transparent window ...