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Compact fluorescent bulb, single 2-pin tube, 6.61 inches long, .50 inch diameter, G23 base

Ushio

Ushio CF9S/827 9 W 2700 K fluorescent standard bulb

SKU CH-FXX4-584WG

A 9-watt compact fluorescent bulb with a G23 base delivering 600 lumens at 2700 K and a CRI of 82

  • Power rating9
  • Light output600
  • Color temperature2700K
  • Color rendering82
  • Product typeFluorescent Bulbs
  • Warm 2700 K light creates a cosy atmosphere
  • 600 lumens from just 9 watts saves energy
  • High 82 CRI renders colours accurately
  • Compact 6.61-inch length fits tight fixtures
  • G23 2-pin base allows simple installation

Compact fluorescent bulb for general lighting

This 9 W Ushio fluorescent bulb produces 600 lumens at a warm 2700 K colour temperature. It is built for standard fixtures that accept a G23 two-pin base. The 82 CRI rating delivers acceptable colour rendering for everyday residential or commercial use. Its single-tube design keeps the profile slim for tight fittings.

G23 base and slim tube dimensions

The lamp uses a G23 two-pin base that plugs directly into compatible sockets without adapters. At 6.61 inches maximum overall length and .50 inches diameter, the tube fits most compact luminaires designed for this format. The 2-pin configuration means the ballast must be in the fixture rather than the lamp. Physical dimensions suit recessed or decorative fixtures with limited depth.

No bundled accessories or software

The bulb ships as a single lamp with no additional components, controls or software. Installation is limited to inserting the pins into a matching G23 socket on a suitable ballast. There are no dimming modules, remote drivers or smart features included. Buyers needing dimmable operation or integrated control gear should verify fixture compatibility separately.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $2.99
Cheaper than about 96% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeFluorescent Bulbs
Display
Light output600
Power
Power rating9
More details
Color temperature2700K
Color rendering82

Questions about this item

What does the G23 2-pin base limit in practice?

The G23 base only fits magnetic ballast fixtures wired for 2-pin compact fluorescent lamps; it cannot be used with electronic ballasts or 4-pin sockets.

What clearance does the 6.61-inch length and .50-inch diameter need?

The single tube measures 6.61 inches long and .50 inches wide, so the shade or canopy must provide at least that much straight length and half-inch diameter space.

How is this lamp installed, and what step is often missed?

Align the two pins with the G23 socket slots, push straight in until seated, then verify the fixture uses a magnetic ballast — electronic ballasts will not start the lamp.

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