Inquiry (采购产品): HEPA filters Please provide info & pricing/availability for HEPA filters: 22193, 22196, 22231, and HD24. Application is for final filtration of welding smoke from exhaust fans. One is 530 cfm with 10' duct; the other is 800 cfm with 10' duct. **** Hidden Message ***** phil putnam 23606 USA Company: marine chemist service E-mail: pputnam@marinechemist.com **** Hidden Message ***** pputnam@marinechemist.com
