Koch Filter 19X21FC Fan Coil Air Filter 19x21x1 in

Product Description

The KOCH FILTER 19X21FC is a 1-inch fan coil air filter sized at 19 inches by 21 inches, engineered for exact-fit installation in fan coil units and air handler applications. It captures dust, particulates, and airborne debris in return air streams, maintaining proper airflow across the coil surface. This filter is installed by HVAC technicians and building maintenance professionals in commercial and residential fan coil systems where dimensional precision is critical to filter seating and bypass prevention.

This filter is suited for fan coil units and air handlers that require a 19-inch by 21-inch by 1-inch filter slot. It is commonly used in return air applications within multi-zone hydronic systems, chilled water fan coils, and packaged terminal units. Its exact-fit design minimizes air bypass around the filter frame, keeping the coil clean and system efficiency stable between service intervals.

Key Features

• Exact-fit 19 x 21 x 1 inch dimensions for fan coil and air handler applications
• Captures dust and airborne particulates in return air streams
• Supports proper airflow across the coil surface to maintain system performance
• Frame design minimizes air bypass around filter edges
• Suited for both residential and light commercial fan coil installations

Compatibility

Designed as an OEM-style replacement filter for fan coil units and air handlers requiring a 19-inch by 21-inch by 1-inch filter.

Installation Notes

This filter is installed by licensed HVAC technicians or qualified maintenance personnel. Power down or disable the fan coil unit at the disconnect before servicing the filter compartment. Ensure the filter seats flush within the track or frame with no gaps at the edges to prevent unfiltered air bypass. Follow local mechanical codes and the equipment manufacturer guidelines for recommended filter replacement intervals.

Technical Specifications

• Filter Length: 19 inches
• Filter Width: 21 inches
• Filter Depth: 1 inch
• Application: Fan coil units, air handlers

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: 19X21FC