We made Steel rack, stainless steel rack, plastic rack. Specification as follows: 1) 10*30*1000(mm) 2) 11*30*1000(mm) 3) 12*30*1000(mm) 4) 22*22*1000(mm) 5) 22*22*2000(mm) Above module are all "4", we can also processing defferent module as your requirement.