Sold in a package of 20, this is the 3" x 9.5" replacement prefilter for the original Quatro SPU dust collectors. In 2016 the redesigned units use a 4.5" x 7.5" pad - see our 854-2078. Current SPU models do not utilize a prefilter of any size.
| Brand | Quatro |
| Country of Origin | Canada |
