93713
Here are some suggestions:
3" Hole Grommets
45º Angled Beveled-Edge Mounting Grommets
Surface Mount Brackets
Mounting Brackets
Grommets For Surface- Or Flush-Mount Lights
Security Rings
Grommets For Small Rectangular Lights
Grommets For Rectangular Lights
Closed Back Grommets For 4" Round Lights