Caddy 512HDEEP Heavy Duty T-Grid Box Hanger, Mounting Clip,
T Grid Ceiling - Installing an Electrical Box Supports - YouTube
Steel City® SSF-TH24 Acoustical Tee Snap On T-Grid Box Hanger, 24 in Span, Height Adjustment 1-1/2 in, For Use With Fixture or Boxes, Steel | SMC Electric