Question about devices 5.25 in the bench

Any one knows if I have the sufficent space in the bench to place 2 boxes of 3x5.25 inch devices and at the same time the standar box for the 3 Hard drives (3.5 inch)- Normally I see a single boxes of each type but I must to know if I can putt 2 of the 3x5.25 inch. Thanks

PS. I been fully updated by email from Dimastech shop