You have to cut each individual divider . All of the dividers are attached together for each individual row. So, you get 4 rows of 5 dividers connected together. Now, you have to take a razor blade,, no, a pocket knife, no that’s no good, a pair of scissors,,nope too big,; a small pair of scissors, that I could not believe I found in a sewing kit, that I couldn’t

believe I found it; to meticulously cut them apart. Now , one has a teeny tiny piece that is not flush, or you have sheared of a ppiece that is a bit too thin. Well, they are both now useless. Thisis a horrible, horrible design . Luckily Kast king , who I considered to be an inferior product, has them already pre-cut and they fit in perfectly with the 3600 or 3700 or 3700 XL. Plano needs to get back to the drawing board. Whoever engineered this, obviously failed. industrial arts class what we called wood-shop class..