Manufacturer · HCAI/OSHPD OSP

Twin City Fan — OSP Preapprovals

All 4 HCAI/OSHPD Special Seismic Certification preapprovals issued for Twin City Fan equipment. 0 active, 4 expired. Source data from HCAI · updated 2026-04-21.

Filter:All Active only Expired only

Equipment categories from Twin City Fan

Air Handling Units – Fans
Exhaust/Smoke Control Fans

OSP #	Sub-Category	Expires
OSP-0195	Air Handling Units – Fans	Expired	Details →
OSP-0271	Air Handling Units – Fans	Expired	Details →
OSP-0355	Air Handling Units – Fans	Expired	Details →
OSP-0395	Exhaust/Smoke Control Fans	Expired	Details →

About Twin City Fan OSP preapprovals

Listed records are sourced from the official HCAI OSP page. Always verify status, conditions, and expiration with HCAI before specifying a component. Need PE/SE stamped anchorage calculations for Twin City Fan equipment? Talk to a Panache engineer.

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