This rack was ordered and built custom for me in 2011. Shelf dimensions: 20 inches Wide by 16.5 inches Deep. I removed the bottom shelf ( as is visible in the photo) to make room for other equipment; it is long gone.. I think anyone interested could easily fabricate a new shelf with a good piece of hardwood stock. Clearance between 1st and 2nd shelf is 7 inches. Clearance between 2nd and 3rd shelves is 6.25 inches. Distance from floor to 1st shelf is 39 inches. I also cut out some tubular sections from the back to make more room for interconnections. It is a Rock Solid unit....Served me well with a VPI Aries I. Unit is available for LOCAL PICKUP only. in Manhattan. Until 6/29. This is my move date, so after that I will discard.