Single location crank latch (patent pending). Mounted inside building on door, these self-adjusting latches tightly draw and secure Hi-Fold Door against jambs to protect against thieves and bad weather. Electrical interrupt supplied to guard against damage if locks are not fully released prior to operation. A durable bottom weather seal adjusts to floor irregularities; 9" and 12" top door seals are optional.& 2 hp doors. Radio remote control is optional.