Filter King AF20x25x1-M13 Merv 13 Air Filter 20x25x1

Product Description

The FILTER KING AF20x25x1-M13 is a MERV 13 pleated HVAC air filter designed for residential and light commercial forced-air systems. With a nominal size of 20x25x1 inches and an actual size of 19.5 x 24.5 x 0.75 inches, this filter fits standard filter slots without modification. MERV 13 filtration captures fine particulates including dust, pollen, mold spores, pet dander, and airborne bacteria-sized particles, making it appropriate for systems where indoor air quality is a priority. Licensed HVAC technicians and knowledgeable DIYers install this filter as part of routine preventive maintenance on split systems, heat pumps, gas furnaces, and air handlers.

This filter is suited for residential applications where improved filtration efficiency is needed without significantly restricting airflow in properly sized duct systems. At MERV 13, it performs well in homes with occupants who have allergy or respiratory sensitivities. The 10-unit pack quantity supports technicians who service multiple units or prefer to keep replacement stock on hand. Standard 1-inch filter tracks and filter grilles are the typical installation point.

Key Features

• MERV 13 rated filtration captures fine particulates down to 0.3 to 1.0 microns
• Pleated media design increases surface area for improved dust-holding capacity
• Nominal size 20x25x1 inches fits common residential filter slots
• Actual size 19.5 x 24.5 x 0.75 inches for proper gasketed fit in standard tracks
• Sold in a quantity of 10 filters per order, suitable for multi-unit service calls or stocking

Compatibility

Designed as an OEM-style replacement for residential and light commercial forced-air systems accepting a nominal 20x25x1-inch, 1-inch-thick pleated air filter.

Installation Notes

Installation is performed by licensed HVAC technicians or qualified owners during routine maintenance. Always shut down the air handler or furnace at the disconnect or thermostat before replacing the filter. Confirm airflow direction arrow on the filter frame aligns with the direction of airflow into the blower. MERV 13 filters can increase static pressure drop in undersized or restricted duct systems — verify the system is rated to handle MERV 13 before installation.