Vortex Powerfans VBC400 173 CFM 4" Inline Fan by Atmosphere is specifically designed for warm and humid applications. Available in sizes ranging from 4" to 12" and can develop up to 1010 CFM. Every model is built for a connection to a standard round duct.

Features
Brackets included for wall or ceiling mount
Permanently lubricated sealed bearings
External rotor motor with automatic reset thermal overload protection
Suitable for airstream temperatures up to 140°F (60°C)
Aerodynamic design allowing more air flow
Airflow capacity from 173 to 1010 CFM
Speed controllable
5-year warranty

All VBC Products incorporate motors suitable for 120 Volts ACHz Electrical supply only.