The Koch Multi-Pleat XL8 is a medium efficiency extended surface pleated panel filter, engineered to provide higher initial efficiencies and overall superior performance than standard pleated filters. The Multi-Pleat XL8 carries a MERV 8 and MERV-A 8 performance rating in accordance with ASHRAE Test Standard 52.2-2007. The MERV 8 and MERV-A 8 performance rating provided by the Multi-Pleat XL8 make the filter an excellent upgrade from disposable filters and standard MERV 6 and 7 rated pleated filters. The Multi-Pleat XL8 media is produced with an optimal blend of highly specialized fibers, developed by Koch Filter Corporation specifically for use in extended surface air filters. Developed to deliver a "one of a kind" performance, this specialized media operates on mechanical filtration principles which provide high efficiency, low pressure drop and high dust holding capacity. The Multi-Pleat XL8 is an extremely versatile line of pleated panel filters which can be used in a wide variety of filtration systems worldwide. In order to meet the different requirements found in these applications, Koch offers the XL8 Series in two media area capacity levels. Koch Filter® Extended Surface Pleated Panel Filter, Series: Multi-Pleat XL8™ SC, 12 in Width, 4 in D, 24 in Height, MERV: 8, 600 to 1250 cfm, 200 °F, Beverage Board Frame, 30 to 35% Efficiency, 0.09 to 0.25 in WG Initial Resistance, 1 in WG Final Resistance, 100% Synthetic Media, White, Domestic