JACKYLED UL-Listed 13W T3 Spiral GU24 CFL Light Bulbs, 2700K Soft White 2 Prong Twist Lock Base Light Bulb, 1000 Lumen Compact Fluorescent Bulbs (2 Pack) - - Amazon.com
Types of light bulbs and lamps set in doodle style. Vector icons collection of electric lighting fixtures. Incandescent, energy-saving, LED and fluorescent lightbulbs infographic on a blue background. 8028342 Vector Art at
Light Bulb Shape Guide: Spiral CFLs — 1000Bulbs.com Blog
Compact fluorescent lamp - Wikipedia
UNITEDLUX 13 Watt CFL Light Bulb (60 Watt) Soft White 2700K 1040LM Spiral Bulb Medium Base Compact Fluorescent Bulb (2 Pack) - - Amazon.com
4 Types of Light Bulbs: Which is More Energy Efficient