I also have these RBI racks and they are great, But from here on out I will be building my own...The melamine racks I have built will house 4 iris 32qt bins or steralite 28qt. With melamine being so heavy , I only build them 4 high and drill holes for pins to make them stackable. Also all of the rack pieces were cut from 1 piece of 4 x 8 melamine (Home depot will cut it free, I also let them do the cut math, I just put them together) . This is a material list that I purchased to complete this rack design.

The following are the the QTY and size of pieces cut from one 4x8 sheet of melamine..

2Pc. 26 3/4 H x 23 3/4 W (This will be your L and R side pieces)
1Pc. 26 3/4 H x 17 1/2 W (This will be the back piece)
5Pc. 23 3/4 x 16 (These will be your shelves)
1 Box of 8 x 2 screws (The QTY I purchase are 161 count box)
2 packs of iron on melamine edge trim.
8 Ft. of 3 inch 10 Watt heat tape ( One continuous piece ran from first shelf to the bottom shelf. For belly heat)
1 Roll of aluminum tape.

Total Cost just short of $75.00