Hydraulic vs. Bifold
Designed to hold the base of the door security against the building when the door is in the closed position. Our 2 styles include:
1 - Wind Rails. Included are safety wind rails attached to the bottom of the side rails. Used on solid square columns.
2 - Continuous Wind Rails. Continuous safety wind rails can be attached on the side rails. Run from the bottom all the
way to the top of the gear openings.
The Wind Rails hold the bottom roller in place when the door is closed.
Designed to hold the base of the door securely against the building when the door is in the closed position.
I - Beam Columns secure the door in all positions.
On each side of your door opening the side rails mount to each door jamb. The bottom door rollers roll up on each side rail. The door rolls up on these side rails, providing a safe guide for the door rollers as the door opens and closes. Our side rails are heavy 1/4" thick angle iron for good solid backing
Center wind pins - 1" diameter minimum - Furnished on bifold doorframes to increase the load strength and provide a sturdy installation.