PUF for Pesticide Particulate/Vapor Air Sampler: Complete with outdoor anodized aluminum PUF shelter, aluminum blower motor assembly, 4" particulate/vapor sampling module, flow venturi calibration valve system, 0-100" magnehelic gage, motor voltage control/elapsed time indicator, (10 exhaust hose, and 7-day mechanical timer (110v/60hz or 220v/50hz)