Seismic certification for multimotor plenum fan 17th February 2026 Engineer News Network Bookshop Comments Off on Seismic certification for multimotor plenum fan 47 Q-PAC‘s Q-PAC Multimotor Plenum Fan (MPF) is now covered under HCAI Special Seismic Certification Preapproval OSP-0875, giving engineers a seismically certified … Read More » Share Facebook Twitter Stumbleupon LinkedIn Pinterest