includes 2 versions 1 for full size printers and one for the a1 mini.
full size version is 20cm long and 14cm wide and 14cm tall
A1 mini version is 18cm long and 14cm wide and 14cm tall which i found a tad shorter than my books but still works fine
If using raw files I would recommend printing the actual holder on its side (like in the image) as i ran into issues printing it lay flat.
the drawer cavity is around 40mm tall and there is a small tab at the back to stop the drawer sliding all the way through.