The CRL Birmingham Series Bottom Lock Patch mounts to the bottom corner of the lead pivot panel of the bi-fold system. The easy lock and release mechanism secures the door in the closed position. This patch is available in a brushed stainless steel finish and is non-handed. Two holes in glass panel are required.

The Birmingham Bi-Folding Top Hung Door System features corner patches to create a modern and elegant look. It can accommodate from two to twelve panels that can be bi-folded to one side or bi-part, with a maximum of six panels to a side. The systems are easy-to-install and a cost-effective solution for commercial or residential interior applications.

There are three kits available from stock: 2 x 2 Bi-Folding, a three panel Bi-Folding, and a four panel Bi-Folding. All with everything you need to complete the installation, except for the glass and the fasteners going into the substrate. However, the combinations do not stop there, you can easily add additional fittings to create the desired configuration of your choice, providing it meets system limitations.

Panels are hinged together with alloy 304 stainless steel patches and suspended from the satin anodized aluminum top track by heavy-duty rollers. Similar patches are used at the midpoint of the panels to ensure safe operation on openings taller than 104" (2.6 m).

Matching bottom patches with guide pins slide inside a floor mounted continuous channel maintaining proper alignment of the panels as they fold open and closed.

Maximum panel weight of 110 lbs. (50 kg), with a maximum width of 29" (737 mm) and maximum height of 118" (3 m). Fittings can accommodate 3/8" or 1/2" (10 or 12 mm) tempered glass and require two holes per door, per fitting, and notches for the center lock housings. The top and bottom tracks come in 118" (3 m) lengths.

Optional Slim Line Locking Handles and Receiver Handles are available.