description clean mat 24in x 45in (4pk) to prevent dust and dirt from spreading while building or remodeling, surface shields? also offers the clean mat. each mat contains 30 tabbed sheets for easy removal of each layer. these effective mats are commonly placed outside dust / lead containment areas or used as a door mat when entering a building. california proposition 65 warning. features tacky surface mat to remove dust and dirt from footwear just peal a tab off to expose a new layer prevents dust and dirt from spreading while building or remodeling do not adhere to carpeted surfaces specifications acme tools brand name surface shield acme tools part number cm2445b4 assembled weight (lbs) 12 california proposition 65 warning required yes color clear country of origin china globaltradeitemnumber (gtin) 00796976218333 indoor / outdoor indoor mat type commercial material polyethylene package contents (4) clean mat 24in x 45in package depth 1 package height 24.5 package weight 9.6 package weight (lbs) 13 primary color blue rug shape rectangle upc 796976202431