P1S4-500-599 Koch 4" Multi-Pleat XL11 Single Filter 24.625" x 29.75"

Multi-PleatTM XL11 Standard Capacity MERV 11 Extended Surface Pleated Panel Filter

Multi-Pleat XL11

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 ASRAE 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 environments.

Multi-Pleat XL11 Construction

The Multi-Pleat XL11 is produced with a highly specialized, dual-layered 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). The dual-layered construction of Multi-Pleat Series XL11 overcomes a common problem found in single-layered electrostatically charged filters. In filters produced with single-layered media, the effectiveness of the electrostatically charged media decreases over time as the filter becomes dirty and the charge dissipates.As the effectiveness of the electrostatically enhanced E-layers decreases, the downstream mechanical M-layer takes over.

Two Media Area Capacity Levels

Standard Capacity XL11 filters provide a combination of efficiency, economy, and excellent overall performance. Standard Capacity XL8 filters are an excellent choice in applications where filter change schedules are based on preventive maintenance schedules.

High Capacity X11-HC filters are similar in construction to the Standard Capacity but have the added advantage of approximately 30% more media. The additional media results in extended filter life, making the XL8-HC the ideal filter for use in filtration systems where filter change schedules are predicated on recommended final pressure drop readings.

Features:

• Upgrade from standard pleated filter
• MERV 11 rating
• Dual-Layered filter media
• Low pressure drop
• High dust holding capacity
• Superior Efficiency
• Available in 1”, 2”, 4” and 6” depths