Air Filters Inc. Gas Turbine Replacement Air Filters are used on large engine air intake where hi-efficiency is coupled with long life. These filters are comprised of a continuous sheet of a dual layered moisture resistant borosilicate microglass media that is deep pleated. All filters contain corrugated aluminum separators to provide even spacing of pleats and allow complete utilization of media. Turbine air intake filters are available in a standard or hi-capacity configuration. The special dual layered media provides exceptional dust holding capacity and strength. Air Filters Inc. Turbine Air Intake Filters are offered in single header or double header style, and are available in 5", 6" or 12" nominal thickness. All filters utilize a protective screen on entry and exit side. Exit side has additional crossbracing to protect against blowout.