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.
Equipment categories from Twin City Fan
| OSP # | Sub-Category | Expires |
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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.