The instructions explain using a 2 3/4" hole saw which is too small, the junction box does not fit and the light is very narrow, a 3" hole saw must be used. The junction box is almost useless, clamp connectors are required for the power connection, which must be included! Note that the screws used to attach the PSU are very small and require a #1 tab, very difficult to work with and just need a better design.
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