Stimw
Elite Member
I have repaired hundreds of roll up doors on semi's and many trucking company dock doors.
I managed to get 4 chain operated 12' wide X 14' high wrap up doors that were being replaced in a high crime neighborhood. All I had to do was haul them away!! You can see one in the pic.
The wrap up doors are much better because they take up less room overhead.
Both types have counter balance springs that can be set to what ever you want in lift pressure.
To remove an old roll up door in a semi we would take out the back stops, disconnect the cables and shove it to land on the floor!! I would hate to be under one if it fell! The wrap ups would have to come off the wall to fall.
I managed to get 4 chain operated 12' wide X 14' high wrap up doors that were being replaced in a high crime neighborhood. All I had to do was haul them away!! You can see one in the pic.
The wrap up doors are much better because they take up less room overhead.
Both types have counter balance springs that can be set to what ever you want in lift pressure.
To remove an old roll up door in a semi we would take out the back stops, disconnect the cables and shove it to land on the floor!! I would hate to be under one if it fell! The wrap ups would have to come off the wall to fall.