... lift and vertically lift door,with manual operated and Motornized,suit for various door hole demand.1.Panel ... )2.Accessory contain all nessory part for full set door. 3.Track:2" Hot-dipped galvanized.single track ... for headroom above 35mm. 4.Hinge:side hing,central hinge 1#,2#,3#,4# 5.OD: ... square steel bar in each panel to strength the door body,panel 9.thickness is 40mm,square steel ...