The Koch 4-Inch Multi-Pleat XL8 Furnace Filter is a medium-efficiency extended-surface pleated-panel filter, engineered to provide higher initial efficiency and better overall performance than standard pleated filters.
The MERV-8 efficiency ratings provided by the Multi-Pleat XL8 make the filter an excellent upgrade from disposable filters and ordinary pleated filters in applications such as hospitals, laboratories, pharmaceutical plants, commercial office buildings, and in any system in which a higher degree of clean air is required.
The Multi-Pleat XL8 is produced with a highly specialized, dual-layered, 100% synthetic media, developed by Koch Filter Corporation 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).
Combination Electrostatic and Mechanical Media
The dual-layered construction of Multi-Pleat Series XL8 overcomes a common problem found in single-layered electrostatically charged filters. In filters produced with single-layer media, the effectiveness of the electrostatically charged media decreases over time as the filter becomes dirty and the charge dissipates.
The unique dual-layered media design of the Multi-Pleat XL8 greatly reduces this problem. As the effectiveness of the electrostatically enhanced E-Layer decreases, the downstream mechanical M-Layer takes over. The M-Layer steps up to provide better continuing overall performance and excellent dust-holding capacity.
Other features include:
- Moisture-resistant beverage-board frame maintains rigidity even in high-humidity environments.
- Upstream electrostatically charged E-Layer provides high initial efficiencies.
- Downstream mechanical M-Layer provides excellent dust-holding capacities and efficiencies throughout the filter's lifecycle.
- Rust-resistant, galvanized-dipped, expanded metal support grid is totally laminated to media to insure even pleat spacing and structural support.
- Pleats are bonded to frame to guarantee consistent pleat configuration and total media utilization.
- Frame is double-walled with reinforced corners to insure rigidity in the toughest applications.
