The ISSA NO. of marine lamps----infrared lamp is from 790901 to 790978, which include: RF, RS ... RS-H, IR-RH. The ISSA NO. of infrared lamp is from 790901 to 790978FOUCTION:RF(790901-790909):to be ... or in the engine room.Made of hardened heatresisting glass. 110v/220v 100W-1000WRS-H(790941-790956):Specially designed ... ,paints,etc.110V/220V 250W,375W, 500W Marine Lamp---infrared Heat Lamp(RF/RS/RF-H/RS-H)