Clean Room Mat & Frame KitAdhesive surface removes dirt and dust from shoes and equipment wheels Ideal for reducing contamination in clean rooms and controlled environments Each layer can be used multiple times and removed once dirty Place on tile, concrete or low profile carpeting Frame allows mats to be used in multiple areas, without adhering the pad to the floor itself Includes: (4) Packs of 30 sheets, (1) Matting frame Width: 18" Length: 3' Backing Thickness: 1. 57 mils