1st Stage 2nd Stage Final Stage Prefilter Prefilter HEPA Filter Select from: Select from: Select from: PerfectPleat® *VariCel® *AstroCel I (MERV 7) *VariCel II *AstroCel I HCX PerfectPleat SC M8 (MERV 8) *VariCel II MH (99.97 - 99.9995%) PerfectPleat HC M8 *VariCel M-Pak (MERV 8) *VariCel V PerfectPleat ULTRA (MERV 8) *VariCel VXL *(MERV 11-15) AstroCel® I Extend AstroCel® I Life with Prefilters No HEPA filter installation should ever be operated without prefilters. AAF has a broader selection of prefilters than any other manufacturer – from roughing filters, to automatic roll filters, to pleated filters, to extended surface filters. AAF strongly recommends two stages of prefilters in front of HEPA filter installations. AAF tests have shown that prefilters greatly extend the life of HEPA filters. The higher the efficiency of the prefilters, the longer the life of the AstroCel I filters. MERV 15 filters can extend HEPA filter life nearly nine times. Typical Three Stage HEPA Filter Installation 1st Stage 2nd Stage Final Stage *Available with antimicrobial. Prefilter Life Extension of AstroCel I 2" Disposable Panel Filter 26% Extended Surface Filters MERV 7 35% MERV 11 170% MERV 13 520% MERV 15 880% PerfectPleat® is a registered trademark of AAF-McQuay Inc. in Canada and the U.S. AAF Green® is a registered trademark of AAF-McQuay Inc. in the U.S. AAF has a policy of continuous product research and improvement and reserves the right to change design and specifications without notice. ISO Certified Firm ©2013 AAF International The USGBC Member logo and LEED® are trademarks owned by the U.S. Green Building Council and are used by permission. AFP-1-110X SEP '13 AAF International Building 9920 Corporate Campus Dr., Suite 2200 Louisville, Kentucky 40223-5000 Customer Service 888.223.2003 Fax 888.223.6500 www.aafintl.com
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