Description Accessories Description Filter 22mm ISO taper, HEPA grade for TSI flow meters. State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories TSI Alnor Mass Flow Meter 300 L/min 4040 Was: Now: $1,385.00 Add To Cart The item has been added