For applications where there the only available space to store the door in the open position, is above the opening. System included overhead horizontal track, wheels in vertical track, and roller bearing pulleys for counter balance.
Two Sizes:
- No. 1:
For doors up to and including 8'x8' weighing no more than 350 lbs. - No. 2:
For Doors up to 12'x12' weighing no more than 750 lbs.