Description from the Altenew website (sold out at the moment):
This die will cut a 2.75" x 1.5" rectangle and 10 fine rectangular frames. The smallest frame measures 2.85" x 1.6" and the largest frame is 3.75" x 2.5".
This is a highly intricate die, to cut out all the individual frames, please considering using 2-3 paper shims or a metal shim plate and run it through the die cutting machine a couple of times. Depending on the die cutting machine used, it may or may not need more shims.