R39 E14 Base Lava Lamp Bulb, 30 Watt Replacement Bulbs for Lava Lamps, Extra Long Life Reflector Spot Light Bulb, High Temp Resistant Lava lamp Light Bulb - - Amazon.com
30 Watt Light Bulbs
Sylvania Part # 14836 - Sylvania 30-Watt R20 Flood And Spot Incandescent Light Bulb (6-Pack) - Incandescent Light Bulbs - Home Depot Pro