Johns Manville Co.            Filtration 2008 Conference Coverage                                        '10 Booth #:  TBA     www.jm.com/filtration          Interviewee John S. Robertson, Business Manager, Air Filtration robertj@jm.com Ph: 303-978-5557 Fax: 303-978-3715   2008 Interview Summary:   In liquid filtration, progress is being made to provide finer fibers, increased gradient density and pleatable media. Assurance is a new air filter media which has self supporting pleats and a MERV7-8 rating. The company sells microfiber glass fibers and a wide range of media.