Keedex K-BXDBL234-AL-2 Double Weldable Gate Box 234in Aluminum

A weldable gate box is the steel enclosure you weld into a gate frame so a lockset has something to mount into. The K-BXDBL234-AL-2 is the double version, meaning it is prepped on both faces for cylindrical hardware, so you can run lever or knob trim on the inside and outside of the gate. It takes a 2-1/8 inch cylindrical prep at a 2-3/4 inch backset, which is the standard commercial cylindrical lock prep, and the box itself measures 4 3/4 inch W x 8 5/8 inch H x 2 inch D.

If your lockset is a cylindrical lock with a 2-1/8 inch cross bore and a 2-3/4 inch backset, it drops right in. That is the prep this box is cut for. A lock built for a 2-3/8 inch backset will not line up, and mortise locks will not fit at all since the box is bored for cylindrical hardware, not a mortise pocket.

No. The K-BXDBL234-AL-2 is .125 gauge aluminum, and aluminum welds to aluminum, not to steel. Use it on aluminum gates and fences. If the gate frame is steel, you need the steel version of the same box rather than this one.

Plan on a pocket that clears 4 3/4 x 8 5/8 x 2 inches, since that is the box footprint. The 2 inch depth is the number that usually decides it: the gate's tube or channel has to accept the box body behind the face, and the 8 5/8 inch dimension has to fit within the stile run of the frame. Measure the tubing before cutting.

The double box is prepped on both sides of the enclosure so trim mounts on the exterior and interior faces of the gate. A single box is prepped on one face only, for openings where you just need keyed access from outside and no matching trim on the back. The K-BXDBL234-AL-2 is the double, at a 2-3/4 inch backset with a 2-1/8 inch cylindrical prep.

No lock is included. The gate box is the weld-in housing only, sold as a single model, K-BXDBL234-AL-2. You supply the cylindrical lockset separately, and it has to be a 2-3/4 inch backset lock with a 2-1/8 inch bore to match the box prep. Budget for the lock, the trim, and any keying work on top of the box.

That is the point of the 2-3/4 inch backset and 2-1/8 inch prep: it is the same cylindrical lock prep used on commercial doors, so the gate can take the same cylindrical locksets you already stock and key into the same system. One caveat, the box is aluminum, so it only welds to aluminum gates. Steel gates on the same property need the steel version.

Yes, it is a commercial-duty item, built from .125 gauge aluminum, which is a heavier wall than decorative sheet and is what holds up to gate slam and repeated lock cycles on a property gate, apartment courtyard, or pool enclosure.