Item Watts Socket Ceiling Hole Meas. BS1515A 2*E27 145*145mm 43*41*38cm BS1515B 2*18w G24D2 145*145mm 43*41*38cm BS1515C 2*18w G24D2 145*145mm 43*41*38cm BS1515D 70w R*7S 145*145mm 62*42.5*31cm BS1515E 70w R*7S 145*145mm 43*41*38cm