Standard rubber corrugated matting
1/8" thick and 1/4" thick solid rubber corrugated matting. A durable corrugated rubber runner engineered for maximum service and long wear. Has a smooth back finish. An all-weather product. Will not curl shrink or separate. Cleans easily and quickly, promotes clean-lines. Good abrasion resistance and sound absorbing. Comes in 24 inch, 36 inch, 48 inch and 72 inch wide rolls of 25 yards and 50 yards. Black in color.

ASTM Switchboard insulating matting:

A corrugated all-rubber insulating matting specially compounded for use as a floor covering for protection of workers. It is expressly designed to protect workers against electrical shock when working around high voltage apparatus within the product specification. Conforms to ANSI/ASTM D 178/81 type 1 class 2. Proof tested at 20,000 volts AC. Maximum recommended use voltage is 17,000 volts. Dielectric strength 30,000 volts AC. Permanently branded on the back. Also conforms to OSHA regulations. Ref>29CFR 1910,137 and 29 CFR 1910.309(b).