NaceCare Duplex Yellow Medium Ultrabrush for the Duplex 420 Scrubber

The Duplex 420 runs 2 brushes. Choose 1 Brush to replace a damaged one, or Set of 2 to change both sides at once.

The Yellow UltraBrush Medium is the middle gear for your NaceCare Duplex 420 scrubber. Medium-abrasion bristles that bite harder than the everyday Blue Soft brush without going full industrial. When standard maintenance cleaning isn't getting your floors as clean as they need to be, this is the brush you swap in.

Best for: Grouted ceramic and porcelain tile, quarry tile, textured stone, restroom floors, kitchen flooring, and any surface where dirt collects in grooves and grout lines that a softer brush can't reach. Also a strong choice for facilities with higher daily soil loads, like gyms, schools, and industrial breakrooms. Our professional tile and grout cleaning machine guide covers when a brush is enough and when grout needs a spinner.

Daily maintenance on softer surfaces? Use the Blue UltraBrush Soft. Tackling concrete or full grout restoration? Step all the way up to the Red UltraBrush Max. Replacing both brushes at once keeps the two sides of the machine wearing evenly.