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Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack)

Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack)

Best price now

$17.41at Cardinal WarehouseChecked Nov 8

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Price facts

  • Last seen at $17.41 at Cardinal Warehouse on Nov 8.

Our take on the Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack)

This is a 16-inch circular T9 fluorescent tube rated at 40 watts and 4100K cool white. It is a direct replacement for the round lamps used in many ceiling fixtures, magnifier lamps and older circular work lights. The circline format gives even, all-around light from a shallow fixture, which is why it persists in kitchens, garages and utility rooms. It is a legacy fluorescent lamp: it needs a compatible circline ballast and will not run on its own. Compared with LED circline retrofits it costs less to buy but uses more power and dims toward the end of its life.

Best forReplacing a burned-out circline tube in an existing fixtureKitchens, garages and utility rooms with round fluorescent fittingsMagnifier and task lamps that take a 16-inch circlineBuyers who want a neutral cool white rather than warm light
Pros
  • Standard 16-inch circline size fits many existing fixtures
  • 4100K cool white suits task and utility areas
  • Even light around the full circle from a shallow housing
  • Simple plug-in replacement for the old tube
Cons
  • Fluorescent tube: needs a compatible circline ballast
  • Uses more power than LED circline replacements
  • Contains mercury, so disposal needs care
  • Output fades and flicker can appear as it ages

Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack) prices at every store

  • Cardinal WarehouseNew

    In stock

    $17.41Checked Nov 8
    Visit Cardinal Warehouse

About the Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack)

Internet # Â 100015557

Model # Â 391185

Questions and answers

Will this fit my round ceiling light?
It is a 16-inch T9 circline tube, so it fits fixtures built for that size and pin configuration. Check the old tube's diameter and connector before ordering.
Does it need a ballast?
Yes. It is a fluorescent lamp and runs only on a compatible circline ballast. It will not work wired directly to mains.
Is 4100K warm or cool?
4100K is cool white, a neutral tone slightly cooler than typical warm white household bulbs. It reads clean and bright rather than cozy.
Can I replace a fluorescent circline with LED?
Yes, LED circline retrofits exist and use less power. Some need the ballast bypassed, so match the retrofit to your fixture.
How should I dispose of it?
Fluorescent tubes contain a small amount of mercury. Take it to a household hazardous waste or bulb recycling point rather than household trash.
Where is the Philips 40-Watt 16 in. Linear Circline T9 Fluorescent Tube Light Bulb Cool White (4100K) (1-Pack) cheapest?
At Cardinal Warehouse, for $17.41, as of our latest check.

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