Plusrite 3357 - 300 Watt Halogen Light Bulb - T3 - R7s Base - Clear - 2,000 Life Hours - 5,950 Lumens - 120 Volt - Amazon.com
4 X Energy Saving 300W R7S Linear Halogen Floodlight J118 Security Bulb 118mm 5055875518735 | eBay
300W Warm White (3000K) R7S Base T3 Dimmable Halogen Light Bulb
USHIO J120V-300W/79MM Short R7S-12 base Halogen Bulb | Michaels
5 Pcs Dimmable R7s 118mm 300w Halogen Pencil Bulb Ac 220-240v 3100lm Linear Halogen Floodlight For Landscape Lighting, Security, Street Light | Fruugo NO