This Bi-Fold Door bottom pivot by Prime-Line Products is constructed of both steel and plastic components. The steel bolt comes in a corrosion-resistant, zinc-plated finish. This bi-fold door pivot features a bottom mount design with a hex head bolt for quick vertical adjustment, and it fits on 1-inch to 1-3/8 in. thick bi-fold doors, whose weight does not exceed up to 30lbs. each. Installation of these pivots requires only a 3/8 in. diameter hole beneath the vertical stile of the bi-fold door.

David. US. Sun May 11 2025

This knob set is constructed of zinc alloy (cast Zamak) and comes in a polished chrome-plated finish. It is designed for use with a concealed latching mechanism, it has an offset bolt with a flat tip, and it assembles easily with a push nut fastener. This knob set has a 1-3/4 in. Outside diameter, and it features a flat, slotted emergency-access knob on the exterior. Knob sets like these are used to replace broken and missing knob sets of concealed latches. This set is used with steel doors, and it is easy to install. Note: Assembly will be permanent upon the first unification of both parts. Attempting to separate the inside and outside knobs once joined may damage the internal push nut component.