REPLACEMENT PANEL FILTERS FOR THE MOST POPULAR FLOOR & SWEEPER EQUIPMENT. FEATURING THE INDUSTRIES FIRST ""WASHABLE"" FILTER MEDIA IN ADDITION TO STANDARD PAPER AND MELTBLOWN FILTER MEDIA. TENNANT REPLACEMENT INDUSTRIAL SWEEPER PANEL FILTERS ARE MADE OF CELLULOSE. FOR USE WITH TENNANT 650065506600. SOLD 1 PER CASE. 1 YEAR LIMITED WARRANTY.