Filter King AF20x20x1-M11 Merv 11 Air Filter 20x20x1

Product Description

The FILTER KING AF20x20x1-M11 is a MERV 11 rated pleated air filter designed for residential and light commercial HVAC systems. Sized at a nominal 20x20x1 inches with actual dimensions of 19.5 x 19.5 x 0.75 inches, this filter slots into standard 1-inch filter tracks found in air handlers, furnaces, and return-air grilles. At MERV 11, it captures a broad range of airborne particles including dust, pollen, mold spores, and fine particulate matter, making it a solid choice for systems where air quality matters alongside system protection. Licensed HVAC technicians and knowledgeable facility maintenance staff are the typical installers.

This filter is suited for single-family residential forced-air systems, light commercial split systems, and packaged units that accept a nominal 20x20x1 filter. The MERV 11 efficiency level balances particle capture with manageable static pressure, making it appropriate for standard residential blower motors including PSC and ECM types. The 10-pack quantity supports routine filter change schedules and reduces trip frequency for service contractors managing multiple accounts.

Key Features

• MERV 11 rated for capture of dust, pollen, mold spores, and fine particulate
• Nominal size 20x20x1 inches fits standard 1-inch filter tracks
• Actual dimensions 19.5 x 19.5 x 0.75 inches for proper housing fit
• Pleated media design increases surface area for improved efficiency and longer service life
• Sold in a 10-pack quantity for bulk replacement convenience

Compatibility

Designed as an OEM-style replacement for residential and light commercial forced-air HVAC systems accepting a nominal 20x20x1 inch, 1-inch depth air filter.

Installation Notes

Air filters in this size class are installed by HVAC technicians or qualified maintenance personnel. Always shut off the air handler or furnace at the disconnect or thermostat before changing the filter. Confirm airflow direction arrow on the filter frame matches the direction of airflow toward the blower. Inspect the filter track and housing seal for gaps before closing the access panel to prevent bypass air.