Benefits:

• Lighweight yet extremely tough construction; it would take appoximately 12,000 lbs
  (6 tons) of weight to compress the studs under
  a person’s feet.
• Installs directly over plywood or concrete.
• Over plywood the RPM mats replace a cement or fiber backerboard.
• Over concrete the RPM mats insulate the substrate and allow the heat cable’s energy
  to be directed toward the surface rather than heating the concrete slab, thus making it more energy efficient and maximizing the heat on the flooring surface
• Cuts quickly and easily using a razor blade to score and snap.
• The cable is unspooled directly into the RPM
  mats, below the installers feet, minimizing the risk of the cable getting damaged during
  installation.
• Stud spacing configured to allow the cable to be installed at 2”, 2.5”, 3” or any desired spacing.
• Rubber grommets keep the cable in place during install and allows for a quick installation or re-positioning of the heat cable.
• A cement leveling material is poured into the RPM mats and the top of the studs are used as the screeding surface.
• The mats being made of plastic and the grommets being made of rubber eliminates the risk of the heat cable grounding out to any
  metal strapping or clips.
• In the event a portion of the flooring needs to be removed, the heat cable stays protected from any flooring removal tools, greatly reducing the risk of damage to the heat cable

Specs:

• RPM-330 Sheet Dimensions: 20” x 44” x 5/16”
• RPM-500 Sheet Dimensions: 20” x 44” x 1/2”
• Stud Diameter: 1/2”
• Stud Spacing: 1” on center
• Sheet Weight: 2.8 lbs
• Material: Durable 60 mil ABS Plastic