10x 2.5 HDD Hard drive container tray

UPDATE 12/14/2017 original upload was too small for hard drives. Fixed now

My first design. Nothing special. I don't really know what i am doing but i am trying. i have 8 2.5 HDDs and i just wanted to make something to keep them in. This is the bottom and i also made a lid to it for it. the lid can also be used as a tray its just a not as tall.

Space for drives 72mm(W)12mm(L)74mm(H) x 10
Size of Case 76mm(W)140mm(L)72mm(H)

Any feedback would be nice. i don't have a 3d printer yet and i