1”, 2”, 4” or 6” round ports for running cables and other wiring into the chamber (includes one or two silicone port plugs)

In most cases the 2” and 4” ports (shown here) feature heat-resistant phenolic construction, similar to the thermal breaks on our doorframes. These ports become ‘one piece’ when assembled, for integrity. The smooth interior makes it easier to slide in cables and doesn’t collect water. Both sizes include an exterior cap that creates a tight seal when the port is not used.