FV40 (Master-Vent IMV Centralized Ventilation )
Release time：2011-01-24
* Window Air Inlet FV40 is with aesthetical and unique design which can supply adjustable fresh air to indoor without electricity consumption.
* Built-in window air inlet
* High quality ABS body
* Active carbon sponge to absorb grime. 
* Zero electricity consumption
* Rain and wind proof, anti-insect and anti-dustl 
* Simple installation 
* Convenient maintenance and cleaning.