DRB Pre-Filter Wraps provide excellent protection and prolong the life of your cartridge filters. Our High Arrestance Efficiencies and Low Pressure Drops make your Gas Turbine perform efficiently. Our Filter Wraps are available in Chain-Stitched or popular Velcro designs. These medium efficiency filters are designed to capture large particles before they get to your Cartridge Filters. This extends the service life of your cartridge filters. All DRB Pre-Filter Wraps are available in a High-Loft Multi-Denier Media that is non-migrating. Our filters are designed to UL 900 Class 2 standards and have a minimal effect of pressure drop.