We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Compact double-tube fluorescent bulb with 2-pin base

SYLVANIA

SYLVANIA 21275 CF7DS/850/ECO 7W 5000K 400lm 2-pin fluorescent bulb

SKU CH-Z19X-X6643

A 7-watt compact fluorescent bulb delivering 400 lumens at 5000K with a CRI of 82 and a 10,000-hour rated life

  • Power rating7
  • Light output400
  • Color temperature5000K
  • Lifespan (hours)10000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • 5000 K daylight colour for crisp task lighting
  • 7 W power draw keeps running costs low
  • 400 lm output suits desk or accent fixtures
  • CRI 82 renders colours accurately in workspaces
  • 10 000-hour rated life reduces replacement frequency

Compact fluorescent for task lighting

The SYLVANIA 21275 CF7DS/850/ECO is a 7W double-tube lamp with a 2-pin base that delivers 400 lumens at 5000K colour temperature. It suits fixtures designed for this specific pin spacing and wattage.

Steady output over long runs

Rated at 10000 hours life, the bulb maintains consistent brightness throughout its service span rather than fading quickly. The 82 CRI renders colours adequately for general work areas and utility spaces.

Fits dedicated 2-pin sockets only

The 2-pin base locks into matching compact fluorescent housings without adapters. Buyers whose fixtures use screw-in bases or 4-pin electronic ballasts cannot use this lamp.

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 nameSylvania
Product typeFluorescent Bulbs
Display
Light output400
Power
Power rating7
More details
Color temperature5000K
Lifespan (hours)10000
Color rendering82

Questions about this item

How much power does the 7 W fluorescent bulb draw when it runs continuously?

The lamp consumes 7 watts while operating, producing 400 lumens at a 5000 K colour temperature with a CRI of 82 and a rated life of 10 000 hours.

What fixture does the 2-pin CF7DS/850/ECO bulb need to operate?

It requires a dedicated compact-fluorescent socket that accepts a 2-pin CF7DS base and provides the correct ballast for a 7 W tube.

Can the 5000 K CF7DS/850/ECO lamp replace an older incandescent bulb in the same fitting?

No, the 2-pin fluorescent base and built-in ballast requirement mean it only works in fixtures designed for CF7DS compact-fluorescent lamps.

More in General-Purpose & Specialty Bulbs

Similar items