Plenum Air Coax Cable

Fire-rated half-inch coax for commercial buildings

Half-inch plenum air coax cable for cell phone signal booster systems from Powerful Signal

Plenum air • 400 • RG11 • 240 • RG6 • LMR195 • RG58

In commercial installations of 50‑ohm cell signal amplifier systems, your best choice for connecting indoor antennas is to use half‑inch plenum air coax.

Commercial building codes typically require the use of fire-rated cable in plenum spaces—areas with HVAC air circulation, like those above a drop ceiling or under a raised floor). Plenum air cable is jacketed with fire-retardant plastic that will reduce the release of toxic fumes in the event of a fire.

Plenum air coax also has extremely low signal loss—nearly half that of 400‑type cable—providing better performance and allowing for longer cable runs. Even if your building codes do not have a plenum requirement, using plenum air coax will give you the strongest possible signal in your office or other large building.

Please contact us if you have any questions, and we’ll be glad to assist you in finding the right cable for your installation needs.