The 6000-AH Exec is a available for positive pressure and configuration pictured here is offered with HEPA filtration and a 22-pound carbon cell. The is a high efficiency positive pressure air cleaning unit fitted with HEPA filtration and carbon post filtration. This option allows for enclosure air to be recirculated with with 99.97% HEPA efficiency and fumes from volitile organic compound (VOC) fumes can be extracted. All this while sensitive equipment like servers, routers and contactors are being protected from thermal overlaod. Please contact us with any details on a project that would call for high efficiency positive pressure air purification.