AAF DuraShield SN Gas Turbine Large-Diameter Cylindrical Cartridge Ø405mm x 876mm – Synthetic Nanofiber Media – MERV 15 / F9
AAF DuraShield SN is a high-efficiency synthetic cartridge filter engineered to protect gas turbines with sustained F9 (MERV 15) initial efficiency. It is supplied as a single standalone large-diameter cylindrical element, Ø405mm outer diameter (approx. 16″) and 876mm in length (approx. 34.5″), for housing positions that take a single large-diameter cartridge.
The DuraShield SN 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 | Large-Diameter Cylindrical Cartridge (standalone) |
| Outer Diameter | Ø405mm – approx. 16″ |
| Length | 876mm – approx. 34.5″ |
| Media Grade | DuraShield SN |
| Media Type | Synthetic (Nanofiber Layer) |
| Efficiency Class (EN779) | F9 |
| MERV Rating (ASHRAE 52.2) | MERV 15 |
| Rated Airflow | 1,989 m³/h |
| Rated Initial Resistance | 148 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
Matches the exact same 16″ OD x 34.5″ length footprint as Koch Filter KF-CYL-12-16-345-OO (ICF-12, MERV 12) in our Large-Diameter Cylindrical Cartridge line — a drop-in, higher-efficiency nanofiber alternative in the identical housing.
| Specification | Value |
|---|---|
| Filter Style | Large-Diameter Cylindrical Cartridge |
| Media Grade | DuraShield SN |
| MERV Rating | MERV 15 / F9 |
| Compatible Turbines | Universal |
| Housing Compatibility | AAF |