Koch Filter 18X20X1 Disposable Air Filter 18X20X1

Product Description

The KOCH FILTER 18X20X1 is a disposable air filter sized at 18 inches by 20 inches by 1 inch, designed for residential and light commercial HVAC systems that require standard 1-inch panel filtration. The filter captures airborne dust, lint, and larger particulate matter, helping to protect equipment components such as evaporator coils, blower wheels, and heat exchangers while maintaining adequate system airflow. It is installed by HVAC technicians during routine maintenance and by facility staff performing scheduled filter changes. The 1-inch nominal depth makes it a common form factor across a wide range of forced-air systems.

This filter is suited for installation in standard return-air grilles, filter slots, and air handler cabinets that accept a 1-inch panel filter. Typical applications include residential furnaces, central air conditioning air handlers, and packaged rooftop units requiring routine filtration in a standard-depth rack. It is intended for regular replacement on a schedule determined by system use, local air quality, and manufacturer recommendations.

Key Features

• Standard 18 x 20 x 1 inch nominal size fits common residential and light commercial filter housings
• Disposable construction supports straightforward replacement without cleaning or maintenance
• Captures airborne dust, lint, and larger particulate to protect downstream HVAC components
• Designed to maintain adequate airflow through the system during the filter service life

Compatibility

Designed as an OEM-style replacement panel filter for residential and light commercial forced-air HVAC systems accepting a standard 18 x 20 x 1 inch disposable filter.

Installation Notes

Filter changes are typically performed by HVAC technicians or qualified maintenance personnel. Before servicing, set the thermostat to off and shut down the air handler or furnace at the disconnect or breaker to prevent airflow during the swap. Install the filter with the airflow directional arrow on the frame pointing toward the blower. Dispose of used filters in accordance with local waste guidelines.

Technical Specifications

• Nominal Length: 18 inches
• Nominal Width: 20 inches
• Nominal Depth: 1 inch
• Filter Type: Disposable panel filter

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: 18X20X1