Ready to withstand heavy foot traffic, this set of four square interlocking black rubber indoor outdoor mats is an ideal option for the front door or entrance way of your home or business. Crafted from rubber, this mat features four interlocking 18-inch squares with edging that combine to make a 36-inch square mat. Can be combined with additional squares to cover a larger surface area. Durable, water, and weather resistant. 18-inch H x 18-inch W x 0.25-inch D