A new high speed hydraulic operator for bi-fold doors is available from Hi-Fold Doors, Inc. The optional hydraulic lift system is designed to power the Hi-Fold Door, which is specially designed with 12 to 24 inches more door opening clearance than standard bi-folds. In addition to increased speed, the hydraulic operator features: increased lifting capabilities; maintenance-free operation in all seasons; and is factory-assembled, wired, plumbed, and tested; www.hi-fold.com.
