Filter King AF20x24x1-M11 Merv 11 Air Filter 20x24x1

Product Description

The FILTER KING AF20x24x1-M11 is a MERV 11 pleated air filter designed for residential and light commercial HVAC systems. It captures a broad range of airborne particulates including dust, pollen, mold spores, pet dander, and fine dust particles. The nominal size is 20 x 24 x 1 inches, with an actual size of 19.5 x 23.5 x 0.75 inches. Rated at MERV 11, this filter provides a solid balance between airflow performance and particle capture efficiency, making it a reliable choice for systems where improved indoor air quality is a priority without restricting system airflow beyond acceptable limits. HVAC technicians and service professionals install this filter as part of routine maintenance cycles.

This filter fits standard 1-inch filter slots in forced-air furnaces, air handlers, and central air conditioning systems sized for a 20 x 24 x 1 nominal slot. It is suited for residential applications and light commercial environments where MERV 11 filtration is specified or preferred. Systems in homes with pets, allergy-sensitive occupants, or moderate dust loads benefit from the higher capture efficiency that MERV 11 provides compared to standard fiberglass or low-MERV pleated filters. This product is sold in a quantity of 10 per order, which supports a full-year or multi-season maintenance supply depending on replacement intervals.

Key Features

• MERV 11 rating captures finer particulates including dust, pollen, mold spores, and pet dander
• Nominal size 20 x 24 x 1 inches fits standard residential and light commercial filter slots
• Actual dimensions 19.5 x 23.5 x 0.75 inches for proper fit and seating in filter tracks
• Pleated media design increases surface area for improved particle capture and filter life
• Sold in a pack of 10 to support multi-filter stocking for scheduled maintenance

Compatibility

Designed as an OEM-style replacement filter for residential and light commercial forced-air HVAC systems using a standard 20 x 24 x 1 inch nominal filter slot.

Installation Notes

Filter replacement should be performed by a qualified HVAC technician or knowledgeable service professional following the equipment manufacturer's maintenance guidelines. Always shut down the air handler or furnace at the unit disconnect and thermostat before removing the existing filter. Insert the replacement filter with the airflow arrow on the filter frame pointing toward the blower, away from the return air duct. Inspect the filter rack for gaps or bypass paths that would allow unfiltered air to pass around the filter media.