Description Manuals Videos Articles Popular Accessories Clemco 21376 - Flow meter for CMS-2 Carbon Monoxide Detector CMS-2 Item # 4 Manual Customers Also Viewed SFD Flanged w/Qk Cplg Nozzle for Hoses 1-1/2"… $225.94 Clemco SXD-6 Nozzle, 1-1/4" Entry with Contra… #04592 $254.07 Service Kit, Motor, CAP-4 #25445 $544.97