OCSIN: 2 Name: Model 4R20 Port: 12/14 port rotor 6/7 (no joke intended) port stator RPM: 3450 Manufacturer: Cyclone Siren Notes: The 4R26 has an identical appearance to the 4R20C, the only differences being the Cyclone Siren logo placed lower and a round back. The siren here before was originally a Federal Signal Model 2T before the pole and such was replaced.
