Infinity Gridfinity Shelf for Multiboard 7x4

Infinity Gridfinity Shelf for Multiboard 7x4 variant I took a shot at making my own 7x4 version of this shelf. I am a novice in tinkercad, but the print came out great, save for the one row of holes being closed that should have been open on the underneath. , thanks, V2 - cleaned up the sides