T8 - 10W 15W 18W UV Bulbs. 10W, 15W, 18W T8 UV BULBS · 15W T8 : 435 mm long (without pins) or 450mm long (including pins). · 10W T8 : 330mm long (without pins) or 345mm long (including pins). · 18W T8 : 588mm long (without pins) or 600mm long (including pins).
