Attributes . Top width (per rib) . Values

1 (2)   1 in (47)   1-1/4" (18)   1/2 in (7)   1/2" (24)   21/32 in (183)   21/32" (240)   22 mm (2)   3/8 in (55)   3/8" (69)   5/8 in (39)   5/8" (56)   7/8 in (21)   7/8" (50)