Koch Filters 1" Merv 11 Air Filter (12 Pack) - 18 x 25 x 1

Multi-Pleat XL11 MERV 11 Extended Surface Pleated Panel Filters The Koch Multi-Pleat XL11 is a medium efficiency extended surface pleated panel filter, engineered to provide higher initial efficiencies and better overall performance than standard pleated filters. The Multi-Pleat XL11 carries a MERV 11 fractional efficiency rating in accordance with ASHRAE Test Standard 52.2. The filter will also provide an Initial Dust Spot Efficiency of 45%, and an Average Dust Spot Efficiency of 55-60% in accordance with ASHRAE Test Standard 52.1. The MERV 11 efficiency ratings provided by the Multi-Pleat XL11 make the filter an excellent upgrade from disposable filters and ordinary pleated filters in applications such as hospitals, laboratories and pharmaceutical plants, commercial office buildings, and in any system in which a higher degree of clean air is required. Multi-Pleat XL11 Construction The Multi-Pleat XL11 is produced with a highly specialized, duallayered 100% synthetic media, developed by Koch Filter specifically for use in extended surface air filters. The new media is composed of an upstream electrostatically enhanced layer (the E-Layer), and a downstream mechanical layer (the M-Layer).

• Nominal size: 18 x 25 x 1
• Actual Size: 17.5" x 24.5" x.75"
• MERV 11 Performance
• Made in the USA