This replacement head harness assembly is designed to be used with 3M Secure Click Half Facepiece Respirators HF-801SD, HF-802SD, HF-803SD (sold separately).
Used to calibrate the carbon monoxide (CO) monitors in the 3M Portable Compressed Air Filter and Regulator Panel 256-02-00, 256-02-01 and 3M Retrofit CO Monitor Kit W-2808. Contains a 0.6 cubic foot...