AAF DuraShield S Gas Turbine Conical/Cylindrical Cartridge Set – Cone Ø444/324mm + Cylinder Ø324mm, 600mm – Synthetic Hydrophobic Media – MERV 15 / F9
AAF DuraShield S is a high-efficiency synthetic cartridge filter engineered to protect gas turbines with sustained F9 (MERV 15) initial efficiency. It is supplied as a matched two-stage Conical/Cylindrical set: a tapered conical element (Ø444mm large end / Ø324mm small end) paired with a constant-diameter 324mm cylindrical element, both 600mm in length (approx. 17.5″/12.75″ OD x 23.6″ L), installed together in the same housing position.
The DuraShield S media is a multilayer construction combining an inorganic depth-loading synthetic with a polymer-based carrier layer that stabilizes the pleats during forming, producing well-formed V-pleat geometry for even particle loading and low obstruction to airflow. The media is hydrophobic and will not swell when saturated from prolonged high humidity, mist, or fog, and the cartridge uses a positive sealing gasket to remove any risk of air bypass.
Technical Specifications
| Filter Style | Conical/Cylindrical Cartridge Set |
| Conical Element OD | Ø444mm (large) / Ø324mm (small) – approx. 17.5″ / 12.75″ |
| Cylindrical Element OD | Ø324mm – approx. 12.75″ |
| Length (each element) | 600mm – approx. 23.6″ |
| Media Grade | DuraShield S |
| Media Type | Synthetic |
| Efficiency Class (EN779) | F9 |
| MERV Rating (ASHRAE 52.2) | MERV 15 |
| Rated Airflow (Set) | 2,550 m³/h |
| Rated Initial Resistance (Set) | 140 Pa |
| End Caps Material | Galvanized Steel or Stainless Steel (option) |
| In/Outside Liner | Galvanized Steel or Stainless Steel (option) |
| Gasket Material | EPDM |
| Sealant | Polyurethane |
| Burst Strength | > 6,250 Pa |
| Max Operating Temperature | -40°C to +70°C |
| Humidity Range | 0 to 100% Relative Humidity |
| Compatible Turbines | Universal — GE, Siemens, MHI, Solar, P&W, Kawasaki frames |
| Housing Compatibility | AAF and standard gas turbine inlet retaining frames |
Cross-Reference
Functionally comparable to Koch Filter ICF-12 (MERV 12) and ICF-15 (MERV 15/F8) conical/cylindrical cartridge sets in our own catalog, and to high-humidity synthetic cartridges from Donaldson, Farr/Camfil, and BHA. DuraShield S adds sustained, non-degrading F9 (MERV 15) efficiency and a hydrophobic media that resists swelling in coastal or tropical humidity.
| Specification | Value |
|---|---|
| Filter Style | Conical/Cylindrical Cartridge |
| Media Grade | DuraShield S |
| MERV Rating | MERV 15 / F9 |
| Compatible Turbines | Universal |
| Housing Compatibility | AAF |