RS2.1   Single Shelf Support
Shelf thickness:   
Minimum: 4mm (5/32")
Maximum: 8mm (5/16")

Rod spacing: 
Shelf width + 19mm (3/4")

RS2.2  Single Shelf Support
Shelf thickness:                  
Minimum: 4mm (5/32")
Maximum: 10mm (5/8")

Rod spacing:
Shelf width + 19mm (3/4")