It is designed to have a reflector and mounting hardware (eg, clips) underneath.
Power is 120 – 277V (50-60Hz), with 1% dimming over DALI, wireless (Harvard EyeNut) or 1-10 / 0-10V. The data sheet is here.
The light engine can provide 3,000 lm from 22W with an efficacy of 136 lm/w.
Size is 150 x 140 x 48mm