KoolDuct's energy productivity and for all intents and purposes release free properties were likewise huge selling focuses, Ryan added. The pre-protected phenolic conduit's standard thicknesses for the North American market are R-6 for interior use and R-8 for outside use to meet current International Code Council necessities, with R-12 boards accessible for engineers looking for a superior warm presentation on their structures. Utilization of phenolic conduit may likewise offer general workers for hire a shifting measure of LEED (Leadership in Energy and Environmental Design) green phenolic foam duct structure focuses, contingent upon evaluation by each building's modeler or specialist.