Image is Representational - See Manufacturer Specs | Fan Tubeaxial - 24VDC - Square - 92mm L x 92mm H - Ball - 60.0 CFM (1.68m�/min) - 3250 RPM - 38.0 dB(A) - 3 Wire Leads. The 3414N/39HH is tubeaxial fan with polyamide (PA) nylon fiberglass reinforced blade and polybutylene terephthalate (PBT) fiberglass reinforced frame. Operating temperature range is from -4 to 158�F (-20 to 70�C).