The instructions explain using a 2 3/4" hole saw and it's too small, the junction box doesn't fit and the light is very narrow, a 3" hole saw must be used here. Connection The box is almost unusable, clamp connectors are required for the power installation, these should be enclosed! 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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