Filter King AF25x30x1-M11 Merv 11 Air Filter 25x30x1

Product Description

The FILTER KING AF25x30x1-M11 is a MERV 11 rated pleated air filter designed for residential and light commercial HVAC systems. With a nominal size of 25 x 30 x 1 inches and an actual size of 24.5 x 29.5 x 0.75 inches, it fits standard filter slots calling for a 25x30x1 nominal filter. At MERV 11, it captures fine particulates including dust, pollen, mold spores, pet dander, and some fine dust particles that lower-rated filters miss. Pleated media construction increases surface area for better filtration efficiency without excessive airflow restriction. This filter is installed by HVAC technicians and qualified service professionals during routine maintenance or filter replacement service calls.

This filter is suited for forced-air heating and cooling systems in residential homes and light commercial buildings. It fits air handlers, furnaces, and heat pumps that accept a standard 1-inch nominal filter. MERV 11 filtration is commonly specified in environments where improved indoor air quality is a priority, such as homes with pets, allergy sufferers, or facilities requiring moderate particulate control. The 25x30x1 nominal size covers a common filter bay dimension found across a wide range of central HVAC equipment.

Key Features

• MERV 11 rated filtration captures fine dust, pollen, mold spores, and pet dander
• Nominal size 25 x 30 x 1 inches fits standard 25x30x1 filter bays
• Actual size 24.5 x 29.5 x 0.75 inches for proper fit without forcing
• Pleated media design maximizes surface area for improved airflow and efficiency balance
• 1-inch thickness compatible with the most common residential filter slot depth

Compatibility

Designed as an OEM-style replacement for residential and light commercial forced-air HVAC systems requiring a nominal 25x30x1 inch, 1-inch-thick air filter.

Installation Notes

Installation is performed by HVAC technicians or qualified service personnel during scheduled maintenance. Always shut down the air handler or furnace at the equipment disconnect or thermostat before replacing the filter. Confirm airflow direction arrows on the filter frame align with the direction of airflow into the blower. Inspect the filter cabinet for bypasses or gaps after installation to ensure all air passes through the filter media.