FAA-PMA Approved Replacement for Boeing P/N: S161N300-1 and FAA Approved for installation on Boeing 737-300, 737-400, 737-500, Purolator's FAA-PMA Approved HEPA Cabin Air Recirculation Filter P/N: 1762992 is an approved replacement for Boeing P/N: SI 61 N300-1 which is interchangeable with Boeing P/N: S210N701-20 and -21 two-piece and S210N701-465 single piece filter configuration (Ref. Boeing Commercial Aviation Services — Service Letter 737-SL-21-055 and 757-SL-21-054). Purolator's HEPA Filter Technology is 99.97% efficient at removing 0.3 micron particles. designed to satisfy 6000 flight hours (C-check intervals). HEPA Filters are designed to remove typical contaminants found in aircraft cabin air environments. Typica contaminants retained are dust, pollens, lint, bacteria and viruses. The technology utilized to manufacture Purolator's Cabin Air Filtration Products is identical to the same technology and materials used in most hospita surgical rooms and pharmaceutical clean rooms. DESIGN REQUIREMENT Boeing Part Number Purolator Part Numbe Aircraft Applicability Rated Airflow Recommended Service Interval Skydrol® Testée HEPA CABIN AIR RECIRCULATION FILTER FEATURES Purolator Facet, Inc. A CLARCOR Company 8439 Triad Drive, Greensboro, NC 27409-9018 Email: [email protected] Copyright by Purolator Facet, Ine

MODERN AIRCRAFT CABIN FILTER SYSTEMS Modern jetliners have complex air recirculation systems designed to maintain a safe, comfortable cabin air environment at altitudes as high as 40,000 feet. These systems pressurize the cabin, control the air circulation and temperature, and filter the air. Outside air is continuously mixed with recirculated air from the cabin and passed through sophisticated cabin air filters. Purolator's cabin air filters are designed and manufactured to meet the stringent demands of these systems. Made from the same media as filters used in hospitals and clean rooms, Purolator's...