PB 600900 26" 3 Single Row Poly Side Brush for Power Boss Atlas Sweepers. 3 rows of stiff polypropylene filaments are fitted into a solid broom block. Block diameter is 18" with a broom flare (sweeping path) of 26". Fits Minuteman Power Boss Atlas sweepers. We also offer this side brush in a long lasting Nylon (PB 620092) and flat wire (our PB 600900WI). Priced Each. Replaces Minuteman Power Boss 600900. Our Part Number PB 600900