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

The 2” and 4” ports (shown here) feature heat-resistant phenolic construction, similar to the thermal breaks on our doorframes. These ports becomes ‘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 port is not used.