Festool CT36AC ELITE HEPA Dust Collector Package 60 ft Each) 5 gal pk Perforations No Size:80 in (200 cm) Each) 5 gal pk Perforations No Fluids Absorbed Universal Backing Material Adhesive Backed Sorbent Capacity 5 gal Surface Material Polyester Material Polyester Thickness 1 8 in Color Gray Indoor Outdoor Indoor Edge Style Straight Item Sorbents Absorbency Weight Heavy Volume Absorbed Per Pkg This is the physical dislodging of the dirt particles that are attached to the surface Automatic Filter Cleaning: The integrated automatic filter cleaning system helps maintain optimal suction performance by periodically cleaning the filter during operation Robust Design: Built for durability