WHD UPM 260-T10-100V, 20 cm-Ceilling-LS-System, 10/12 W, 20 Ohm, 50-18.000 Hz, RAL 9003 white, 10W-Transformer, for ceilling thickness 9 to 20 mm, dimensions: outside dia. 261mm, mounting depth 90mm, cutout 228mm, weight 1,3kg