I designed and made it to fit in my Champion Safe Triumph Series.
There are 21 Drawers - 19 1/8" by 20 5/8" inner dimensions with 100 lb rated roller slides - Thought if I had to store something else (I also collect C&R firearms and coins), I should go for the maximum weight capability.
I first lined it with a non-skid fabric that was guaranteed to be neutral to steel. Well, I started getting a little marking, so my wife got some felt and lined the drawers with felt. No marking or staining now. I found the metal label holders and drawer pulls at Lowe's. Quick and Easy to change labels as the collection changes.
A couple of more pictures of the parts and storage of some of my Randall 11 collection.