Plenum Cables are needed when they are run in ceilings or through crawl spaces. This conforms to many local fire codes. Cables.com always uses bulk wire with CMP printed on the jacket. This is the highest level of in-wall and in-ceiling rated plenum wire. The reason why these are required is because it burns slower than regular Riser Rated Cable in case of a fire. All plenum cables manufacturered and sold by Cables.com are 350Mhz rated, the fastest speed achievable in Cat.5e! 50 micron gold connectors on both ends, pure bare copper wire so you get the best performance. We give you the quality you demand! It is better to be safe and run plenum cabling since it is the same diameter and size as a regular network patch cable. Please note that all plenum cables are built to order and cannot be returned.
