Trying to hack a 4x4 or 5x5 kallax...I need 12 boxes for sewing supplies and a 3 wide space for my sewing machine/serger. I've seen people take out one divider, but will
New Kallax sizes at IKEA®! - Stamp-n-Storage
IKEA KALLAX Shelving Unit with 10 Inserts, 182x182 cm, Black-Brown : Amazon.co.uk: Home & Kitchen