Keystone KT-LED7T8-24GC-840-D 7W, 1000 Lumen, 2', 240' Beam Angle, Ballast Bypass, DLC 4.0, Coated

It's a ballast bypass (direct drive) lamp, so the fluorescent ballast has to come out. The fixture gets rewired so line voltage lands on the tombstones feeding the lamp. If you want a tube that runs off the existing ballast with no rewiring, you need a Type A plug-and-play lamp instead, not this one.

For a one-for-one swap in a 2 foot fixture, yes. The lamp puts out 1000 lumens at 7 watts. A 17W 2 foot fluorescent is nominally around 1300 initial lumens but loses output over life and sits behind a ballast that burns additional wattage, so delivered light is comparable while input power drops to roughly 7 watts at the fixture.

The 840 code means 4000K, a neutral white. It reads cooler and crisper than 3000K warm white and warmer than 5000K daylight, which is why 4000K is the usual pick for corridors, stairwells, back of house, shops and garages where you want neutral light that matches most existing commercial lamping.

The coated construction is what you specify where a broken tube is a problem. A coating contains glass and phosphor if the lamp is struck or dropped, which is why coated tubes are the standard call in kitchens, food prep and processing areas, schools, gyms and anywhere over an occupied floor. Electrically and optically it's the same 7W, 1000 lumen, 240 degree beam lamp.

Yes, the lamp is DLC 4.0 qualified. That listing is what most utility and energy efficiency programs require before they will pay a prescriptive rebate on a linear LED retrofit, so it matters if you are filing for incentives on a multi-fixture job. Confirm the current qualification against your program's product list when you submit.

Rated life is 50,000 hours. At 12 hours a day that's over 11 years of service, which is the argument for the retrofit on a maintenance budget: the ballast bypass rewire is a one-time labor cost and the relamping cycle largely goes away.