Koch Filter 274-180-200 Fiberglass Panel Filter 18x20x1

Product Description

The KOCH FILTER 274-180-200 is a disposable, non-pleated fiberglass panel air filter designed for commercial and industrial HVAC air-handling applications. Measuring 18 inches wide by 20 inches tall by 1 inch deep, this flat-panel filter provides low-resistance pre-filtration at a rated maximum face velocity of 300 feet per minute with an initial resistance of just 0.05 inches water column at that velocity. It is typically installed by HVAC technicians and mechanical contractors as a primary or pre-filter stage in air-handling units, rooftop units, and commercial air distribution systems.

This filter is suited for commercial and light industrial environments where a cost-effective, disposable pre-filter is needed to capture larger airborne particulates before they reach downstream components such as coils, fans, or higher-efficiency filter banks. The low initial resistance makes it appropriate for systems where minimizing static pressure drop is a priority. Standard 18 by 20 by 1-inch nominal sizing fits a wide range of commercial filter racks and AHU filter sections.

Key Features

• Fiberglass media construction provides low-resistance, disposable filtration
• Nominal size 18 x 20 x 1 inches fits standard commercial filter racks
• Rated for a maximum face velocity of 300 feet per minute
• Initial resistance of 0.05 inches water column at 300 fpm for minimal system pressure drop
• Disposable design simplifies replacement and reduces maintenance time
• Manufactured in the United States

Compatibility

Designed as a standard disposable panel pre-filter for commercial and industrial air-handling units and HVAC systems that accept nominal 18 x 20 x 1-inch flat-panel filters.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified mechanical contractors. Always power down the air-handling unit at the disconnect before opening the filter access door. Verify airflow direction markings on the filter frame align with the system airflow direction before securing the access panel. Dispose of used filters in accordance with local waste regulations and inspect the filter rack for damage or air bypass gaps during each replacement.