Feit Electric 18-Watt Bright White (3000K) T5 Wedge Base Dimmable 12-Volt Landscape Garden Incandescent Light Bulb (4-Pack) BPLV518/4/HDRP - The Home Depot
Westinghouse 3794900 18 Watt Mini-Twist CFL Light Bulb 2700K Warm White E26 (Medium) Base (4-Pack)
Newhouse Lighting 18-Watt Equivalent T5 Halogen Replacement LED Light Bulb Warm White (4-Pack) T5-3018-4 - The Home Depot
Utilitech 4-Pack 18-Watt (75 W Equivalent) Spiral Medium Base Daylight (5000K) CFL Bulbs ENERGY STAR at Lowes.com
LUXRITE 18-Watt 4 ft. Linear T8 LED Tube Light Bulb 3 Color 4000K 5000K 6500K Single and Double End Powered 2340 Lumens (4-Pack) LR34236-4PK - The Home Depot
18 Watt LED Corn Bulb - Aries S Series - 2,430 Lumens - 3000K - E26 Standard Base - Built-in 6KV Surge
GE LED18D38WW930/25 31301 Reveal PAR38 Dimmable LED Bulb, 1170-Lumens, 3K Warm-White, 18-Watt, 120V - Walmart.com