1.0 General
1.1 – Air filters shall be v-bank mini-pleated fiberglass disposable type with pleat separators, polyurethane pack-to-frame sealant, polystyrene enclosing frame and have an ECI value of five stars.
1.2 - Sizes shall be as noted on drawings or other supporting materials.
2.0 Construction
2.1 – Filter media shall be of microfine glass fibers formed into uniform pleats with a spacing of 10 pleats per inch and a uniform pleat height of 24mm. Pleats shall be separated at 25mm intervals to ensure uniform pleat distribution and even airflow through the filter pack. 
2.2 - Pleats media packs shall be assembled into a v-bank configuration with sufficient total media area to meet airflow requirements. The filter outlet shall be radial in shape with a maximum of 60% open area to maintain low-pressure drop and uniform airflow (20” by 20” shall be straight v style design).
2.3 - The media packs shall be bonded to the inside periphery of a polystyrene enclosing frame with a polyurethane sealant. The enclosing frame shall include top and bottom molded tracks as an integral part of the frame to ensure a proper seal. 
2.4 – Media packs shall be recessed at least one-inch from the headered side of the enclosing frame to allow uniform airflow when a prefilter is mounted directly to the enclosing frame. The header shall include a gasket on the vertical side to create a filter-to-filter seal in side-access housing applications.
2.5 - Rigid plastic end caps shall be mechanically fastened to the top and bottom of the media pack enclosing structure to ensure a rigid and durable filter.
2.6 – Carrying handles shall be an integral part of the filter frame and shall bridge from media pack to media pack providing additional filter support and filter rigidity. Handles shall include fastener connection locations for the application of spring mounting fasteners when the filter is applied in reverse flow applications.
3.0 Performance
3.1 - The filter shall have a Minimum Efficiency Reporting Value of MERV (11, 13, 14, 16) when evaluated under the guidelines of ASHRAE Standard 52.2-2012. It shall also have a MERV-A rating of (11, 13, 14, 16) when evaluated under ASHRAE Standard 52.2, Appendix J. It shall have an efficiency of (ePM10-70, ePM1-65, ePM1-70, ePM1-90) when evaluated per ISO filter testing standard 16890.
3.2 - Initial resistance to airflow shall not exceed (0.22, 0.27, 0.29, 0.64) inches w.g. at an airflow of 500 fpm for 24” x 24”, 24” x 12” and 24” x 20” sizes. On 20” by 20” respective pressure drops shall be (0.27, 0.33, 0.37, 0.80) inches w.g. at an airflow of 1980 cfm.
3.3 – Filter shall have a 5-Star rating when evaluated per Energy Cost Index.
3.4 - Filter shall be listed by Underwriters Laboratories as UL Class 900.
3.6 - The filter shall be capable of withstanding 10” w.g. without failure of the media pack.
3.7 - Manufacturer shall provide evidence of facility certification to ISO 9001:2015.
3.8 – Supplier shall have the capability of performing an in-situ test once the filters are installed to verify efficiency and pressure drop performance.
3.9 – The manufacturer shall provide a written Performance Guarantee ensuring the filter has the highest energy savings in its class of product, and will maintain its particle capture efficiency throughout its service life.
Supporting Data - Provide product test reports for each listed efficiency including all details as prescribed in ASHRAE Standards 52.2 and ISO Standard 16890. 
Filters shall be Camfil Durafil ES.
Items in parentheses ( ) require selection.