Concrete mat consists of a 6W cable on a self-adhesive substrate with a 15 cm (6 inch) spacing and is designed specifically to be embedded in concrete. It has a standard width of 61 cm (24 inches). The mat can be installed directly on the insulation under the concrete slab or on a concrete or plywood subfloor with a concrete topping. It will use the thick mass of concrete to store and release a comfortable and uniform heat. Embedding in concrete just got easier. Mat with self-adhesive backing for easy installation. Strong and durable copolymer substrate. Designed specifically to be buried in concrete. No surface preparation or maintenance cost. No additional cost for floor finishing. Does not raise the floor height. Increased thermal mass effect and heat is spread more evenly due to the exceptional heat storing and releasing capacity of the concrete mass. Compatible with most floor coverings. Does not dry the air or spread dust or germs.