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13W double-tube compact fluorescent bulb with 2-pin base

Ushio

Ushio CF13D/841 13W Compact Fluorescent Standard Bulb

SKU CH-ETR6-44HNR

13 W compact fluorescent bulb delivers 780 lumens at 4100 K with an 82 CRI and 10 000-hour rated life

  • Power rating13
  • Light output780
  • Color temperature4100K
  • Lifespan (hours)10000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • 13W compact fluorescent delivers 780 lumens
  • 4100K cool white light with 82 CRI
  • Double tube 2-pin base for direct fit
  • 10000-hour rated life reduces replacements
  • Ushio CF13D/841 model for reliable performance

Ushio CF13D/841 13W Compact Fluorescent Bulb

The Ushio CF13D/841 is a 13-watt double-tube fluorescent lamp with a 2-pin base. It delivers 780 lumens at a 4100K colour temperature and carries a colour rendering index of 82. Rated life is 10000 hours. The bulb suits fixtures designed for this specific pin configuration and wattage.

Who this suits and who it does not

This bulb fits users replacing an identical 13W 2-pin compact fluorescent in existing fittings. It is not for buyers who need a different pin layout, a higher lumen output, a dimmable lamp, or an LED retrofit. Shoppers requiring a screw base or bayonet cap should look elsewhere.

Deciding specification: 2-pin base

The 2-pin base is the single detail that determines whether this lamp will install in your fixture. Match the base type printed on the existing lamp or listed in the fixture manual before purchase; an incorrect base prevents installation entirely.

How it compares

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

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeFluorescent Bulbs
Display
Light output780
Power
Power rating13
More details
Color temperature4100K
Lifespan (hours)10000
Color rendering82

Questions about this item

How do I install the 2-pin base without bending the pins?

Align the two pins with the socket slots, push straight in until the base seats fully, and avoid twisting which can bend the pins.

When will the 13W CF13D/841 need replacement?

The rated life is 10000 hours; plan replacement when output drops noticeably or the lamp fails to start.

What limits continuous operation of this 4100K compact fluorescent?

Sustained use is limited by the 10000-hour rated life and the 82 CRI which may shift as the phosphor ages.

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