RS3.1  Double Shelf Support
Shelf thickness: 
Minimum: 4mm (5/32")
Maximum: 8mm (5/16")   

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

RS3.2  Double Shelf Support
Shelf thickness: 
Minimum: 4mm (5/32")
Maximum: 10mm (5/8") 

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