Panel Air Filters

The MANN+HUMMEL range of panel air filters is designed to fulfil the needs of our customers in a diverse selection of applications. From budget HVAC panel filters with cardboard or plastic frames, right through to panel air filters with coalescing and particle filtration capabilities for gas turbines, MANN+HUMMEL can provide the solution for you.

Macrogen GT-Duo


Macrogen GT Duo has been specifically designed to meet the exact needs of gas turbine operators. With a low initial pressure drop and high dust holding capacity, combined with an inherent water repellency (coalescing and drainage), Macrogen GT Duo meets all the needs of gas turbine power plants.

Made from a durable plastic frame the Macrogen GT Duo product range offers excellent protection to valuable rotating machinery assets like turbines, compressors and pumps. Fitted as a pre-filter. Macrogen GT Duo can improve the overall performance of a turbine, whilst taking up minimal space by eliminating the requirement for an extra coalescer stage.

The filter is ideal for tropical, coastal and offshore gas turbine air intake installations and atmospheric dust concentrations up to 100 μg/m³. Add to this a high burst strength and it is easy to see why this pre-filter/coalescer combination will improve both your turbine’s performance and your maintenance schedule.


  • Combines pre-filter with high efficiency coalescer in one stage
    Saves time, space and cost
  • Patented highly efficient water drainage system
    Drains water away from the downstream airflow
  • Suitable for ambient dust concentrations up to 100 μg/m³
    Allowing use in all environments
  • Fully sealed
    Ideally suited for offshore and coastal applications
  • High burst resistance up to 2000 Pa
    For reliability and safety in operation
  • Low pressure drop
    Maximises turbine power output
  • Synthetic media with excellent hydrophobic properties
    Eliminates the requirement for a separate coalescer stage
  • Fully incinerable and lightweight construction
    For easy storage, handling, installation and disposal
  • Robust hollow profile plastic frame
    Excellent strength and rigidity
  • Stabilized pleats
    Ensure air flow rates up to 500m³/h without clogging


Filter Class (EN 779)G4 / M5
Continuous Operating Temperature< 70 °C
Relative Humidity100%
Flammibility ClassF1
Media FormatPleated
Media MaterialWater repellent synthetic
Frame MaterialABS Plastic
Gasket MaterialPolyurethane