Looking for electricians knowledge on 4’ Florissant bulbs

I bought these 2 years ago, work great, great lighting.
They come with 2 cords, direct plug in or junction off the last light. I ran 8 total, 4 each off 1 outlet.
At first, the light bothered my eyes, but within a few minutes that was gone.
What a gigantic difference, light everywhere.
1 didn't work right out of the box, summit sent me another, about 3 months later one side of one died, they sent me a replacement. They day after I called it worked fine and has since.

I think harbour freight sells similar lights.

https://www.summitracing.com/parts/sum-902003-k