Koch Filter P411225 Pleated Air Filter 12x25x1

Product Description

The KOCH FILTER P411225 is a 1-inch pleated air filter sized at 12 inches by 25 inches, designed for residential and light commercial HVAC systems that require standard panel-style filtration. The pleated media construction increases the effective surface area compared to flat fiberglass media, which improves particulate capture and extends the interval between filter changes. This filter is installed by HVAC technicians and qualified service professionals as part of routine preventive maintenance on forced-air heating and cooling systems.

This filter fits standard 12 x 25 x 1 inch filter slots found in air handlers, furnaces, and return-air grilles across a wide range of residential and light commercial installations. It is a practical replacement choice for any system that accepts a nominal 12 x 25 x 1 inch filter, including upflow, downflow, and horizontal-flow units. Pleated filters of this size are among the most common panel filter dimensions used in North American forced-air systems.

Key Features

• Pleated media design increases surface area for improved particle capture relative to flat panel filters
• Nominal size of 12 x 25 x 1 inch fits a wide range of standard HVAC filter slots
• Extended service interval between filter changes compared to fiberglass panel filters
• Drop-in installation with no tools required in properly sized filter tracks

Compatibility

Designed as an OEM-style replacement pleated panel filter for residential and light commercial forced-air HVAC systems accepting a nominal 12 x 25 x 1 inch filter.

Installation Notes

Pleated air filters are installed by HVAC technicians as part of routine system maintenance. Always power down the air handler or furnace at the disconnect or breaker before removing or installing a filter. Confirm airflow direction before inserting the filter, as the arrow printed on the filter frame must point toward the blower and away from the return air stream. Follow local mechanical codes and equipment manufacturer maintenance schedules for recommended filter change intervals.

Technical Specifications

• Filter Type: Pleated Panel
• Nominal Length: 25 inches
• Nominal Width: 12 inches
• Nominal Depth: 1 inch

Standard Information

• Brand: KOCH FILTER
• Manufacturer Part Number: P411225