Keedex K-BXDBL234-NH Double Weldable Gate Box, No Cylindrical Holes, 2 Latch Holes - 2-3/4" or 2-3/8", 14 Gauge Steel

A weldable gate box is a steel housing you weld into a tubular or ornamental metal gate frame so a lock can be mounted where there is no door stile to bore. The K-BXDBL234-NH is the double version: it's built for a cylindrical lock and gives you a solid 14 gauge steel pocket to carry the latch instead of trying to drill and support hardware in thin gate tube. Common on rolling and swing gates at apartment complexes, pool enclosures, and yard entrances where a standard door lock has nothing to bolt to.

Both. The K-BXDBL234-NH is punched with two latch holes so the same box takes either a 2-3/4 inch or a 2-3/8 inch backset cylindrical lockset, which are the two standard backsets on commercial and residential cylindrical locks. You pick the hole that matches the lock you're installing; no re-drilling for backset.

No. This is the NH (no holes) version: the 2-1/8 inch cylindrical bores are not punched. You get the latch holes only, and you cut the cross bore yourself once the box is positioned. Buyers who want the bores pre-punched should order the drilled version of the Keedex double gate box instead. The NH is the one to take when you want to set the lock height and bore location yourself, or when the exact lock isn't decided yet.

It's built for cylindrical hardware, not mortise. The latch holes are punched on the 2-3/4 and 2-3/8 inch backsets used by cylindrical locksets, and the box is sized for a 2-1/8 inch cylindrical bore. A mortise lock needs a deep rectangular pocket instead and will not go into this box. If your gate is getting a mortise lockset, you need a mortise-style weldable box.

It's 14 gauge steel and rated commercial. That gauge is what lets it be welded into a gate frame and take the working load of a latch being pulled on daily without the pocket distorting, which is why these get specified on multi-family and property-management gates rather than a sheet metal enclosure.

The box is the housing only. You supply the cylindrical lockset separately, and with the NH version you also do the 2-1/8 inch cross bore yourself. Plan the job as three pieces: the box, the lock, and the welding.

The double gives you the two latch hole positions in one box, so it covers either standard backset and you aren't committed to a single lock before the gate is fabricated. That's the practical reason shops stock it: one part number handles whichever cylindrical lockset shows up on the job.