I installed 3 of these lights in my 11 x 12 foot office with a sloping ceiling. Took me about 40 minutes to install 3 lights. "Holes in the ceiling by carefully measuring and checking for bolts. +hole+saw&qid=1582238983&sr=8-5 I connected them to my existing fan junction box which connects to the light switch. I then daisy chained each light together which was very easy with push in wire connectors. almost too bright for my office, I use a GE dimmer switch to turn them on at about 80% brightness. So far I have no complaints.
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