Sorbents, 33 gal, 30 in x 30 in, Universal, Gray, Polypropylene grizzly pro The Graco 24K944 Santoprene Check OD:9 16" The Graco 24K944 Santoprene Check Balls Kit (Ref Simply move the convenient top mounted lever back and forth to remove any dust caked onto the filter Country of Origin United States 22(a)(2) Green Environmental Attribute Product Contains a Minimum of 20% Post Consumer Recycled Content Dimpled Yes Foot Traffic Not Recommended Number of Pads 50 Number of Layers 8 ply Floating No Adhesive Backing No Product Type Sorbent Pad Flame Resistant Yes Printed Message No Message Neutralizing No Color Pattern Gray Incinerable Yes Leak Resistant Backing No Incluces Coverstock No Wringable Yes Volume Absorbed Per Pad 85 oz Dispenser Box No For Use With Chemical or Metal Type Universal Includes Coverstock No For Use With Universal Volume Absorbed Per Sock Boom 33 gal