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
Utilitech 500-Watt EQ T3 Bright White Recessed Double Contact Halogen Light Bulb (6-Pack) in the Tube Light Bulbs department at Lowes.com
500W Halogen 118Mm Work Light Bulb 10-Pack
GE 500w 120v T3 R7s 4.65in Double Ended Clear Halogen Light Bulb – BulbAmerica
10 HALOGEN LIGHT BULB 110-130V 500W 500 WATT J TYPE T3 118mm (R7s) Halogen Bulbs - AliExpress
GE Lighting Double-Ended Clear T3 Quartz Halogen Bulb
Feit Electric 500W Clear Halogen T3 Light Bulb, R7 Base, 2-Pack at Tractor Supply Co.
Feit Electric 500-Watt Bright White (2800K) T3 R7 Base Dimmable Halogen Light Bulb (2-Pack) BPQ500T3/CL/2/HDRP - The Home Depot
10Pcs HALOGEN LIGHT BULB 220-240V 500W 500 WATT J TYPE T3 118mm (R7s) - AliExpress
500W J-Type Long Clear Halogen 118mm. Bulb
Unidentified MFG - 9-202 - Lamps & Lights. Quartz Tungsten J Type T3 Halogen Lamp, 130V 500 watt.
Jaenmsa R7S Bulbs,5 Pack Halogen Bulbs R7S T3 118mm 500W 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