Follow these guidelines to identify your mesh designation:
A. Letter(s) indicating the Mesh Style you have ie B,PB,RR,U,DB,IB
B. Indicates the amount of spirals (or loops) in 12" across width.
C. Indicates the amount of rods in 12" length of the belt.
D. Indicates the wire ga of the rods / followed by the wire ga of the spiral.
(if wire gauge is the same for the spiral and cross rod drop the second one).