EKSAVE R7S Halogen 118mm 500W 120V Dimmable Tungsten J118 T3 J Type Light Bulbs 7500lm Warm White 2700K(Pack of 5) - Amazon.com
5 Bulbs Halogen J Type 100 150 200 300 500W T3 120V R7S 118MM Double Ended Bulb | eBay
Feit Electric 500-Watt Bright White (2800K) T3 R7 Base Dimmable Halogen Light Bulb (2-Pack) BPQ500T3/CL/2/HDRP - The Home Depot
Feit Electric 500-Watt Warm White (3000K) T3 R7 Double-Ended Tube Dimmable Halogen Rough Service Light Bulb (48-Pack) BPQ500T3/CL/RS/2/24 - The Home Depot
Philips Halogen 500-Watt T3 Work and Security Light Bulb, Clear Bright White, Dimmable, Double Ended Base (2-Pack) - Walmart.com
Current Miniature Halogen Bulb,T3,500W Q500T3/CL-130v, 1 - Kroger