High Efficiency Particulate Air (HEPA) filters shall be Model HF-5 Magna-Pak filters provided by Anemostat or approved equal, where shown on the plans or as scheduled. The HEPA filters and associated HEPA filter ceiling modules shall be provided by the same manufacturer and responsibility for fit and compatibility shall be by that manufacturer. 

Filters shall have a minimum DOP efficiency of (99.97%)(99.99%) @ .3 micron particles, and be individually factory tested and scanned for efficiency and pressure drop in accordance with IEST-RP-CC001.  A label shall be affixed to each filter frame indicating serial number, model number, tested performance, and rated air flow.

Boron Silicate glass fiber filter media shall be laminar flow grade with a minimum pleated height of 5” utilizing corrosion-proof plastic separators.  The ratio of total media area to active filter face area shall be at least 50:1 providing extremely long life expectancy. Filters frames shall be fabricated using light weight, rigid, anodized aluminum extrusion with mitered corners and corner gussets, and sealed with urethane potting material for leak-proof construction. Media shall be permanently bonded to the frame with 100% solid polyurethane. Filters shall be of the energy-saving type and shall have an initial static pressure drop rating that does not exceed .27” w.g. at 100 fpm face velocity. Media integrity is preserved up to a static pressure drop of 4” w.g.

Filter seal shall be anti-gravity, self-healing fluid/gel type to provide leak proof interface. Gel to be 2 part urethane with low outgassing properties. Filter gel pocket shall be specifically designed and dimensioned to interface with HEPA filter ceiling module integral knife edge.

Filters shall be shipped separate from the ceiling filter modules, and individually enclosed in sealed, poly bags. Filters shall be strapped for ease of removal from the carton to eliminate potential damage from handling or fingers damaging media. Filter packaging shall include a minimum of 2” dead space between the filter and carton wall.