Double Roller Pillow Block MDPB-16-OPN for a 16mm ShaftDouble Roller Bearing Pillow Block (DPB 16) for a 16mm diameter shaft, which has two sets of 3 opposing roller bearings while maintaining the standard size open bearing profile of a Single Roller Pillow Block (SPB); thus the term "Double." By contrast, a Twin Roller Pillow Block (TWN) also has two sets of 3 opposing roller bearings, but the TWN blocks are double sized as if they were two SPBs fused together. Use a floating "F" part number for each