Nostalgic ST18 120 Volt Medium Base Squirrel Cage bulb is an excellent replica of antique light bulbs and is the perfect complement to any vintage or contemporary decor. Available in a 40 and 60 watt option in Clear or Smoke. Features defined steeple and intricate filament design giving off a warm, amber glow. Lamp Type ST18. 120 Volt. E26 Medium base. 3,000 hour average lamp life. 40 Watt: 135 lumens. 60 Watt: 200 lumens. Length: 5 inch.