Bracket for Honeywell 4' LED Linkable Shop Lamps

I bought four of these 4500 lumen Honewell LED Lamps on sale [at Sam's](https://www.samsclub.com/sams/linkable-shop-light-honeywell-led/prod20590154.ip) for around $25 last weekend (normally $35). They're really nice, but they come with chains and I didn't want to hang mine. Using these brackets, they sit beautifully flush with the ceiling and, in my opinion, look much cleaner.

To mount, screw two of these brackets about 3.5 feet apart with at least two 2"+ wood screws. To line them up, I ra