the box pro CM20-T-W, 2-way (coax) Celling-speaker-system- 40/60 W, 16 Ohm, 60-20.000 Hz (-10dB), white ( RAL 9010), , 100V, 20W-transformer (2.5/5/10/20W), for celling width 1 bis 20 mm, dimensions: outside dia. 205mm, mounting depth 80mm, cutout 183mm, weight 1,62kg, 5 years warranty, ultraflat design White