Air Systems BBK-20 Airline Monitor CO O2 Calibration Kit exhaust fan so any connection that's made

so any connection that's made is secured firmly into place

Accommodates one hood-style respirator or two flow masks (tight fitting)

The Air Systems AV-5PTE features an innovative absolute HEPA certified filtering system & dual-layer intermediate microfilter

Aluminum mast extends from a range of 22" - 70" above ground

Air Systems BBK-20 Airline Monitor CO O2 Calibration Kit exhaust fan so any connection that's madeAir Systems BBK 20 Airline Monitor CO O2 Calibration Kit Air Systems BBK 20 Airline Monitor CO O2 Calibration Kit (BBK 20) is an Air Systems International Calibration Kit. Product details from the Air Systems pricing file: CALIBRATION KIT FOR CO MONITOR; 20PPM CO AND ZERO AIR 17 LITER. Use this listing to confirm the item number, shipping details, and basic product data before ordering. Product details Item number: BBK 20 Product type: Calibration Kit