About this 3D model

I was looking for an efficient spool cradle/holder for my various spools for storage, no need to roll freely, just a simple holder to keep Spool in place for easy storage and retrieval in the future. Found Chris Schroeder's design https://pinshape.com/items/20340-3d-printed-m3d-filament-cradle , I feel it is compact and what I was looking for. I lengthened it (my biggest spool is around 100mm wide, reducing the overall volume to save on filament since I plan on printing multiple copies of it to store my filament spools