Rubber-Cal "Wide-Rib" Corrugated Rubber Floor Mat - 1/8 in x 4 ft x 6 ft - Black Rubber Roll - Walmart.com
Rubber-Cal "Fine-Rib" Corrugated Rubber Floor Mats - 1/8 in x 4 ft x 1 ft Black Rubber Runners - Walmart.com
Rubber Area Floor Mat 1/8"Thk x 36" W x 96" L Roll 'V' Rib Corrugated One Side | eBay
Amazon.com: Rhino Mats SB436-3636 Corrugated Rubber Insulating Switchboard Mat, 3' Width x 3' Length x 1/4" Thickness, 30000 VAC, ASTM Type II Class 2, Black : Industrial & Scientific