I bought these in 26" sections strictly because they were a next day item, but it'd be less wasteful to buy in 30" lengths or one long strip. Numerous sellers here with presumably the same product
https://www.amazon.com/dp/B0BQBMF3V7
I'll undo one and snap a few pix, but it's pretty simple.
These do come attached at the skinny edge like an I-beam, which seems to trip up some folks, but they pull apart easily.