A customer of Tripar had been buying the Reduced Airflow IC Box, but discovered that it did not meet the maximum airflow requirements of a state specification.
In this case this was the Florida Building Code, which prescribes 2 CFM max airflow at a negative pressure of 75 Pascals. Since then, similar airflow restrictions have been imposed in many jurisdictions.
Tripar’s technical specialists analyzed the problem. They saw that the integral junction box used on these IC boxes was already gasketed and had knockouts of the “press-back” type that also did not contain screwdriver slots, meaning that the leakage was elsewhere.