SATCO Lighting S29858 9W LED PL 4-Pin, 3000K, 1050 Lumens, G24q Base, 50000 Avg Rated Hours, Type A, Ballast dependent

Yes, that is exactly what it's built for. The S29858 is a Type A, ballast-dependent lamp: it runs off the existing fluorescent ballast in the fixture, so there is no bypass wiring and no ballast removal. Pull the old 4-pin CFL, plug this in, and the fixture works as-is. The trade-off is that it only works as long as that ballast is healthy; once the ballast fails, the lamp stops working too.

No. The S29858 has a G24q 4-pin base, and a G24d socket is a 2-pin design with different pin geometry, so it will not seat. Two-pin CFL fixtures use a magnetic ballast with a starter, four-pin fixtures use an electronic ballast. Count the pins on the lamp you are pulling out: four pins means this is the right base, two pins means you need a 2-pin lamp or a retrofit.

Both are fine. The S29858 is an enclosed-rated lamp, so it can be used in a closed glass or acrylic downlight without the heat shortening its life, and it carries a damp location rating. Damp covers bathrooms, covered exterior soffits, and parking garage ceilings. It does not cover wet locations with direct water contact.

At 9 watts the lamp puts out 1050 lumens, which Satco rates against a 40W incandescent. In practice it is the swap for a 13W to 18W 4-pin CFL in downlights, wall sconces, and stairwell cans. Color is 3000K warm white with 82 CRI, so it reads warmer than the 4100K lamps common in older commercial fluorescent fixtures. If your building is standardized on 4100K, this one will look visibly yellow next to them.

The lamp itself is listed as dimmable, but because it is ballast dependent the dimming is controlled by the fluorescent ballast in the fixture, not by a line-voltage LED dimmer. If the existing ballast is a non-dimming electronic ballast, the lamp will run at full output. Dimming performance comes from a dimming ballast plus its matching control.

Rated at 50,000 average hours. On a 12-hour-a-day corridor or stairwell schedule that's roughly 11 years of service, which is why these go into hard-to-reach cans where the labor to change a lamp costs more than the lamp. Keep in mind the fixture's fluorescent ballast is the life-limiting part in a ballast-dependent retrofit, not the LED.

No. The lamp is rated for base up or base down burning position, so it works in a recessed ceiling can, a horizontal sconce, or a base-up table fixture without any derating.

It covers 120V through 277V at 50/60Hz, drawing 0.075 to 0.032 amps across that range. That spans both the 120V circuits in residential and light commercial work and the 277V circuits common in commercial buildings, so one part number works across a mixed-voltage property.

Beam spread is 120 degrees with a frosted plastic lens over the LEDs, so it throws a wide, diffused wash rather than a spot. That is the right pattern for general ambient light in downlights, sconces, and corridor fixtures. If you need a tight accent beam, a PL lamp is the wrong lamp type.

No, it is fixed at 3000K. There is no CCT selector on the S29858, so if you are standardizing a building you order the color you want up front. It is also not a three-way lamp.

Aluminum and plastic construction with a white housing, weighing 0.23 lb each. The aluminum portion is the heat sink, which is why the lamp is heavier than the CFL it replaces, worth noting on older sockets or fixtures with a loose lamp holder.