Modular shoe rack infinitely extendable

My wife needed a new shoe rack - challenge accepted :)Since I couldn't find a printable shoe rack which was flexible and easy enough to print for my needs, I designed a modular shoe rack, consisting out of:TypeDimensionsPhotoMaterial neededPrinting timeCommentBase240 mm * 220 mm * 173 mm265 gram11:25 (Bambu PLA)The module is large enough that most footwear (except boots) fit well. The module can be scaled higher if desired. There is also some space on the sides for a brim.Extension220 mm * 2