Bissell 812921, 21" Nylon Carpet Scrub Brush

High quality 21" nylon scrub brush for carpet is flexible enough to gently scrub out dirt, while maintaining fiber "memory" for a longer brush life. On brushes 14" and larger, the two outer rows are heavier to scrub the carpet and flex the pile while the softer inner rows massage the dirt from the carpet for a deeper cleaning action.

For Models: FMC Floor Machine, FMH Floor Machine, FMT Floor Machine, FMU 1500 Floor Machine, FMU 2000 Floor Machine.

Note: Product requires a "break-in" process before use. This will eliminate possible excess drag by "tipping" the strands, removing any possible burs caused during the manufacturing process. For best results, run dry for 15 minutes on a rough textured surface like unfinished concrete first. This will cause the brush fibers to lean or set in the direction of the machine rotation. Rinse the brush of any dirt that may have been picked up, then it is ready for use on carpets.