Ballasts for a lot of T12 lamps stop production in July of this year, this is due to Goverment regulations. Just a FYI.
I got T8 4' from HD. They have a trick grid on the bottom...$22 per fixture. I have four of them in my 20x20 and it is like a hospital.
I went with 5000K temperature.

srmofo,
My dewalt radio was playing when that picture was taken. I tried to look them up on-line but could not locate. I will get the item number off the box tonight. Lowes has a $32model and then this model. I am sure the other one has a better ballast and was a little wider. I actually only paid $16 becuase of a 10% coupon. If there was only a couple dollars difference I would probably got the better lights, but twice the cost? The extra $$ bought the trim and cleaning supplies to start the epoxy floor project. That space is 630 sqft and has 5 lights. No real science to it for me. I would have one more light to be perfect. I would say a good rule of thumb with these lights is one per 100 sqft. That will give you plenty of light! By the way, my ceiling height is 10ft. So my advice is based off that height.
I picked up a bunch of these lights as well to put in my basement and to replace the buzzing t12 lights in my garage.
So how about the part # Do you have that for the rest of us!!!!!
I went out and bought 6 of these last night. The first two I pulled out and put bulbs in both have a hum to them so I guess I'm bringing them back. Did yours have a noise?
What are some good 4ft t8's that dont hum?
Ballasts for a lot of T12 lamps stop production in July of this year, this is due to Goverment regulations. Just a FYI.