Air-Trap FCN Series

The Air-Trap FCN Series is a compact negative pressure waterless trap designed specifically for ductless mini-split systems and other residential/lite commercial equipment where installation space is extremely limited. Its small footprint fits in tight chases and wall-mount installations where a conventional trap would never fit. Operates dry between cycles, eliminates all standard P-trap failure modes, and meets IMC Code Section M307.2.4.1. Patent: US11808482B1.