I'm adding a couple pendant lights in a kitchen and the ceiling box for the
existing fixture isn't in the right location. If I were to use an old work
ceiling box, how heavy of a ceiling fixture could I expect it to support?
Looking at the device, I don't trust it to support very much :-)
Here's a link to the item at Lowes:
Get a "fan brace" box, the kind that fits between the joists.
No need to make a big hole, just slide the thing lengthwise
up thru the plaster hole and then crank the screws to expand
it and wedge between the joists. They are rated for heavy fan loads
and will support any fixture you have in mind.
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