Feit Electric 500-Watt Bright White (2800K) T3 R7 Base Dimmable Halogen Light Bulb (2-Pack) BPQ500T3/CL/2/HDRP - The Home Depot
Light Bulb 120V 500W 500 Watt J Type T3 R7S 118mm Double Ended 4.6 F | eBay
5PCS / Lot Super Bright Halogen Lamp Light Bulb 500W Halogen 220V-240V 2800K Warm White Indoor Halogen J TYPE T3 118mm (R7s)
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
Feit Electric 500-Watt EQ T3 Bright White Recessed Double Contact Dimmable Halogen Light Bulb (2-Pack) in the Tube Light Bulbs department at Lowes.com