Koch Filter P411824 Pleated Air Filter 18x24x1

Product Description

The KOCH FILTER P411824 is a pleated air filter designed for residential and light commercial HVAC systems. Measuring 18 inches by 24 inches by 1 inch, it fits a wide range of forced-air furnaces, air handlers, and central air conditioning systems. The pleated media construction increases surface area compared to standard fiberglass panel filters, supporting more effective capture of airborne dust, lint, and particulates while allowing adequate airflow through the system. Licensed HVAC technicians and experienced service professionals install this filter as part of routine preventive maintenance.

This filter is suited for standard 1-inch filter slots in residential forced-air heating and cooling systems as well as light commercial air handling units. It is a practical replacement choice in applications where wider filter dimensions are required and pleated media performance is preferred over basic panel filtration. No special tools or modifications are needed for installation in properly sized filter tracks.

Key Features

• Pleated media construction increases filtration surface area for improved dust and particulate capture
• 18 x 24 x 1 inch nominal size fits a wide range of standard HVAC filter slots
• Maintains adequate system airflow to support proper heat exchanger and coil performance
• Suitable for both residential and light commercial forced-air applications

Compatibility

Designed as an OEM-style replacement pleated air filter for residential and light commercial forced-air HVAC systems requiring an 18 x 24 x 1 inch filter.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified service personnel during routine maintenance. Power down or switch off the thermostat and air handler before removing the used filter and installing the replacement. Confirm airflow direction arrows on the filter frame align with the direction of airflow through the unit before securing the filter in the track. Follow local mechanical codes and manufacturer service intervals for filter replacement scheduling.

Technical Specifications

• Filter Width: 18 inches
• Filter Height: 24 inches
• Filter Depth: 1 inch
• Filter Media Type: Pleated

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: P411824