Ideal for contoured surfaces, Foam Tacky Roller Mops are perfect for removing particulate matter from the cleanroom. The tacky surface removes contamination from walls, floors, and ceilings for a more convenient and time-saving option vs. traditional wet mopping. The refill roll consists of 9" x 5.25" perforated foam sheets that can be removed to expose the next sheet. 20 sheets per roll. Fits a 9" roller handle, sold separately.