Specially designed adhesive coated mats reduce foot borne dust and particulates from entering cleanrooms and controlled environments. Features: Superior quality.Numbered tabs.Adhesive coating.Multi-layered construction. (0.050 mm per layer) Specs: Contamination Control Mat- 36" x 60"- 60 Layers per Mat- Numbered Tabs- 99.9% Dust Removal- Available in Blue or Gray Case Quantity: 4 Case Length: 92.5 Case Width: 154 Case Height: 2.5