Keystone 13589 - KTL-G22T5-254-4P Germicidal Fluorescent Light Bulb
$18.29
Keystone 21 watt - 17.2" - 62 volt - T5 - 4-Pin (G10q) Base - Germicidal - PureFit Series | Keystone Germicidal Light Bulb (KTL-G22T5-254-4P 13589)