Westinghouse 0478800 500 Watt Halogen T3 Double-Ended Rough Service Cl – lightingnbeyond.com
Feit Electric 500-Watt Bright White (2800K) T3 R7 Base Dimmable Halogen Light Bulb (2-Pack) BPQ500T3/CL/2/HDRP - The Home Depot
HalogenA IDE 500W 220V E40 Bulb Bright White Light, Philips
PHILIPS 118MM 500W HALOGEN R7s DOUBLE ENDED (MADE IN CHINA) Kuala Lumpur (KL), Selangor, Malaysia Supplier, Supply, Supplies, Distributor | JLL Electrical Sdn Bhd
Philips Halogen 500-Watt T3 Work and Security Light Bulb, Clear Bright White, Dimmable, Double Ended Base (2-Pack) - Walmart.com
Philips 415729 500-Watt 4.7-Inch T3 RSC 120-Volt Light Bulb with Double Ended Base, 2-Pack - Halogen Bulbs - Amazon.com