Guardian Fitness Flooring 2' x 2' x 3/8" Interlock Guardian Flooring Systems are an industry standard for recycled rubber interlocking floor systems. Humane was the first company to utilize the non-adhering interlocking system and our mats are used by facilities all over the world. Guardian Floor Systems may be installed as a wall-to-wall system or as a stand alone solution within a room. Due to the interlocking system, the flooring is able to stabilize itself independent from walls and is offered in 3/8" or 1/2" thicknesses to allow for different levels of use.Many commercial equipment companies prefer Guardian Flooring Systems because they can also be pre-cut to size utilizing CAD drawings or accurate measurements, which reduces installation time and creates a lot less scrap.