Thanks guys, I just took out the old fluorescent fixture and installed an outlet that I could plug these new fixtures into.
Brumpkin, good for you.
Installing a flush surface mount outlet box on the ceiling and plugging the fixture into that has always been my favorite way to install consumer grade florescents. I suppose because they just don’t last that long. It sure makes it easy when it is time to hang a new fixture. Hopefully this one will last for years and years.
Feit Model 74093 (Costco item #917972) $35.99 new model.
I opened the Feit 4 foot shop light purchased a Costco Sept2015. This newer model has a pull chain on/off and much simplified design. The power supplies for each tubes are on a one pc board in the cord end plastic box. The box on the other end is empty. The power supply has only a red and a black lead to each LED strip. Each tube has a 60 LED’s arranged as 4 parallel banks of 15 LEDs wire in series. If you look carefully at the circuit board strip, you’ll see the center, series, trace is broken every 15 LEDs. A positive and negative trace runs on either side of the LEDs and is connected as necessary to give a 4P 15S configuration.
So, you can just cut off 15 or 30 or 45 LEDs and the remainder will work fine. Wife sewing bench needed a 3 foot light. I couldn’t find a 3 foot model and 2 foot models cost more than Costco’s 4 foot.
I cut off 15 LEDs and cut the tube with a drimmel. Of course, the remanding 15 LED’s could be placed somewhere else with just 2 wires.
Since it would be easy to configure various lengths and shapes, the Model 74093 would be a good cheap parts source for LED lighting projects.
I have seen this same fixture, first at $40 then $32.
Now in Connecticut without a subsidy it is $29.99
But yesterday, just 10 miles away in a Massachusetts store they are only $19.99, with a Massachusetts subsidy
Even though the current model is 4000K and the older model was 4100K, the difference seems a lot bigger. They also increased the length of the side skirts, which may be to increase lux directly beneath the light, but offers less spill. Also the current model can be daisy chained.
It just so happened that yesterday when leaftye posted his update on this LED shop light, I had used that last one I had for a crawl space in our home. Need to go out and get more. 
Today I went to a Costco and they are $10 cheaper UNTIL 12/24/1016.
I am assuming this is a reduction available at all stores. It comes from the manufacturer. Now is the time
You’re certainly right about that, the new light is a lot warmer than the previous version, but my older version says it is also 4000K
I noticed that the new light uses 42W to produce the rated 3700 Lumens whereas the older light uses only 38W for 3700 Lumen
Or so they say 
Also the lighted tubes are a bit longer on the new version. Overall length of the fixtures are about the same.
Yes, this comparison shot shows the difference. I don’t know if that is good or bad………….
The previous picture also shows the included AC socket so that they can plug into each other, NICE!
They’ve made changes along the way. My older boxes also say it uses 38 watts, but they don’t daisy chain and it says it’s 4100k. It doesn’t have the chain either. I’ll try testing the lux later.
Better and cheaper, that’s how it’s been going.