Satco S3468 20T3/CL 20 Watt 12 Volt T3 G4 Base Clear Halogen Light Bulb
Feit Electric 20-Watt 12-Volt T3 JC G4 Bi-Pin Base Dimmable Landscape Garden Halogen Light Bulb, 2800K Bright White (2-Pack) BPLVQ20T3/2/HDRP - The Home Depot
Paradise Halogen Light Bulb 20 watts Tubular T3 G4 (Bi-Pin) White 2 pk - Bed Bath & Beyond - 11650179
Feit Electric 20-Watt Equivalent T4 G4 Bi-Pin Base Landscape 12-Volt LED Light Bulb Bright 3000K (2-Pack) BP20G4830/LED/HDRP/2 - The Home Depot