Double Tube 2-Pin

Select your Base:

If you're searching for compact fluorescent (CFL) or LED plug-in replacement bulbs, you've likely encountered base types like GX23-2, GX32D-2, GX32D-3, G23-2, G24D-1, G24D-2, and G24D-3. These bases are standardized for specific lighting applications, ensuring compatibility with various fixtures.

The naming conventions of these bulb bases follow a universal standard that specifies: 

• "G" Prefix: Indicates a bi-pin base design.
• "X" or "D" Suffix: Defines pin spacing and locking mechanisms.
• Numbers (23, 24, 32, etc.): Refer to the base type and pin distance.
• "-2" or "-3" Suffix: Identifies whether the bulb has two or three pins for different wattages and ballast compatibility.

As you are looking at compact, double tube 2-pin light bulbs, choose the options that best suit your aesthetic preferences or needs. Choose a high wattage for bright fluorescent light or stick with a lower one to reduce glare. With these compact bulbs, the tubes get longer along with the wattage. Before completing your purchase, take into consideration the color of your bulb and opt for a cooler or warmer white depending upon your preference.

GX23-2 & G23-2

• Type: 2-pin compact fluorescent lamp (CFL)
• Application: Found in desk lamps, under-cabinet lighting, and emergency lights.
• Compatibility: Ballast-dependent CFL fixtures

GX32D-2 & GX32D-3

• Type: 2-pin or 3-pin CFL with a GX32D socket
• Application: Common in high-efficiency office lighting
• Difference: GX32D-3 includes an extra grounding pin for specific ballast compatibility

G24D-1, G24D-2, G24D-3

• Type: 2-pin CFL plug-in base
• Application: Used in commercial downlights and wall-mounted fixtures
• Key Differences:
  • G24D-1: For lower wattage (10W-13W)
  • G24D-2: For medium wattage (18W)
  • G24D-3: For higher wattage (26W)
• Replacement Note: These bases are not interchangeable due to pin positioning differences.

Pay close attention to the various notches on these bases as they will determine whether the light bulb will properly integrate with your fixture.