These passage door latches are constructed of steel and come in a brass plated finish. This latch is designed for indoor use only, and it functions with the use of a spring-loaded square drive spindle at maximum width and height of 9/32 inches. It is used with antique and vintage door hardware and it features a 2-3/8 in. backset. The latch includes a latch strike and fasteners, but it does not include any of the following components and they must be purchased separately: The doorknobs, square spindle, and rosettes. Note #1: The square drive on this latch has a 9/32 in. opening and a 1/4 in. opening. The maximum square spindle size that this latch will accommodate is 9/32 in. Note #2: This item cannot be used on pre-bored doors that have large, newer style doorknob holes without first prepping them to receive this hardware. Installation tip #1: Because the fasteners of the rosettes (purchased separately) require a solid surface to mount to, the large 2-1/8 in. (approximate size) holes must first be filled with a hardening filler, to then be able to receive the rosette fasteners. Products like Fix-It-All® and Bondo body filler® have worked well for some, but care must be used to avoid damaging any prefinished door surfaces during application and finishing. Installation tip #2: Apply a small amount of loctite thread locker 271® to the set screw threads in the event they are loosening – Loctite® is purchased separately.
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