Check the listing for details. Snugger, 2-door, Bi-fold Door (Acme 2049). Condition: New. Listed at 2.48 USD. We are an Authorized Distributor for Andersen, Larson, Marvin, Pella, GU Ferco, Hoppe, Emtek, Roto, Milgard, Peachtree, Weathershield, and many more. Shop our store for your door and window hardware needs. Customer Service Hours Monday-Friday 8am-4pm CST This snugger is spring-loaded and self-adjusting; mounted at the top of a bi-fold door for retaining doors in closed position.Fits "Acme" series 2400 and 2900, 1" bi-fold track.1-1/4 inch spring, 1/2 x 7/8 inch, at the base, plastic housing. Number of Doors: 2Overall Length: 1-3/8-inchSpring Width: 3/8Mount: TopSold Each This useful gadget is designed to ensure that folding doors stay securely shut. It comes equipped with a spring-loaded, self-adjusting mechanism and is installed on the door's top.