300W Warm White (3000K) R7S Base T3 Dimmable Halogen Light Bulb
Jaenmsa R7S Bulbs,5 Pack Halogen Bulbs R7S T3 118mm 300W 120V,J Type Halogen Light Bulb with Long Lifespan,120 Volt Double Ended Light Bulbs for Work, Security,Landscape Lights, Dimmable,4.6 Inch - Amazon.com
Ushio EHM J120V-300W/R7S-12 Base Halogen Bulb - Production Advantage
R7S Bulbs,5 Pack Halogen Bulbs R7S 118mm T3 300W 120V,4500lm J-Type Halogen Light Bulb with Long Lifespan,4.7-inch Long Double Ended Light Bulb for Work,Security,Landscape Lights,Dimmable,Warm White - Amazon.com