It's thus very critical that, where compartmentation boundaries are penetrated by solutions, the fire separation standards with the penetrated components are preserved and, specifically, that ducting must not turn into a conduit along which fires or sizzling smoke may possibly unfold to other spots. Paul Whitehead, prior handling director at https://marcobshwk.ltfblog.com/35349451/not-known-details-about-fire-resistant-ductworth-isntallers