... .Flammable gas, steam class: IIA,IIB; Explosion proof fluorescent lamp,fluorescent lighting,fluorescent lampBOZZY51 Flame-proof Type, Drawn core Type Flourescent Lamp (IIB ... fit can get the single- or dual-foot dual-fluorescent lamps of 20W30W or 40W.Features:1. Diecasted A1-alloy shell ... ±10%G13Exd BT6IP54, IP65W, WF1, WF2G1/2Φ8~Φ10 explosion proof fluorescent lamp