➤ Cross Reference Numbers: FK21, GFK21A, GFK21B, GA3450TA, Rotom HB-RB66, R7-RB66, NOVUS 30, Security UZY3. The gfk21b fan Insulation: Class H (rated to 392°F). Motor RPM: 3000, Airflow in C.F.M: 80, Volts: 120, Frequency: 60 Hz, Power Consumption: 31 watts.
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