500m x 12mm premium underfloor heating pipe. The Ambiflo PE-RT is a durable and high quality product, while remaining flexible and easy to handle. Industry leading 75yr guarantee. There are a number of fixing methords for the 12mm pipe including 12mm cliprail for screeded floors or floating floor panels that take a 12mm pipe. The pipe boasts a 1.5mm wall thickness to maximise the heat output of the pipe, hence its specialist use for Underfloor heating. 12mm underfloor heating pipe must be used with the correct manifold couplings If not this could lead to leaks and unstable connections. Pipe lengths are marked at every meter from naught to the total length of the coil. Coils come in pallets of 15 coils and max loop lengths must be adhered to of 100m. All coils are individually wrapped in black plastic for a higher level of protection.