Not LED, but when I hung mine with cable out the top, I cut 1-1/2 lengths of pvc conduit and used as spacers between the fixture and ceiling. Aligned the pvc pieces with mounting holes in fixture and used long screws to attach to trusses through ceiling. Looks nice and clean.
I have a 30x60, 10' ceiling shop with insulation above white metal ceiling in Northern Mi. I have a continuous ridge vent with appropriate soffits and added a gable end fan with louvers. Thermostat kicks on around 95 degrees and it runs all day in the summer time. The fan is noisier than I...