The cut-outs are quite large - about 90cm, and that's really hindering my choice of replacement lights.
I bought 4 white zone 1 rated lights (about 90cm width), and installed one. It fits well, but it's still not big enough to cover the existing cut out! :(
Have you considered, fixing a platerboard cut of above the hole, this can be fitted using timber board adhesive or no nails. Then fill and plaster and recut hole?
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