Anemostat Model MVPH-T (T-bar ceiling) / MVPH-P (plaster/hard ceiling) room side, replaceable terminal filter ceiling modules shall be installed where shown on the drawings, and shall integrate with the ceiling type shown.  Module sizes to be provided as scheduled.  The height of the terminal module shall be appropriate sized for the filter depth selected.
 
The filter module housing shall be constructed from heavy, anodized aluminum extruded materials, and shall include an integral knife edge for use with HEPA/ULPA filter Gel seals. The housing shall be sealed leak tight using 2-part polyurethane. Ducted units shall have a 10"/12" diameter aluminum top inlet collar for supply air connection.  Non-ducted units for use with pressurized ceiling plenums shall include a 2" thick disposable pre-filter with a minimum efficiency of MERV 8 (pre-filters shipped separate). (Optional) Provide housing with closed cell perimeter gaskets where the housing interfaces with the back of the T-bar ceiling system.
 
One HEPA/ULPA filter shall be provided for each terminal housing, and shall be tested and certified to an efficiency of (99.97%)(99.99%)(99.9999%) on (.30)(.12)micron size particles.  Filter depth shall be (2-1/2")(4")(5") and shall have an initial pressure drop of less than _____ " w.g. Filter frame shall be extruded aluminum construction. Pleated glass media with adhesive separators shall be used.  The entire filter shall use only ozone friendly adhesives and sealants.  Filter seals shall be gel type. An expanded metal protective screen on the room side shall be non-removable and integral with filter frame.  The filter shall include (4) spring-loaded latches that engage the housing to properly support the filter and locate the knife edge within the gel pocket.  The filter shall include a center divider with (2) ports available for pressure testing and introduction of challenge media above the filter.  A center port shall be used to access the perforated disk damper for volume adjustment, from the room side.  Filters shall ship separate from the housing.