AF18x18x1-M8 Merv 8 Air Filter 18x18x1

Product Description

The AF18x18x1-M8 is a MERV 8 pleated air filter designed for residential and light commercial HVAC systems. It carries a nominal size of 18x18x1 inches and an actual size of 17.5 x 17.5 x 0.75 inches. The pleated media construction captures airborne particles including dust, pollen, mold spores, and pet dander. MERV 8 efficiency strikes the standard balance between filtration performance and airflow resistance, making it appropriate for most forced-air systems without placing excessive static pressure on the blower. Sold in a quantity of 10 filters per order.

This filter fits square filter housings calling for an 18x18x1 nominal slot in residential furnaces, air handlers, and split-system returns. The 1-inch depth suits standard single-filter track housings found throughout residential construction. MERV 8 is commonly specified for baseline indoor air quality in homes, rental properties, and light commercial spaces where filtration upgrades from fiberglass panels are needed without stepping up to higher-restriction media.

Key Features

• MERV 8 rated pleated media captures dust, pollen, mold spores, and pet dander
• Nominal size 18x18x1 inches fits standard square filter tracks
• Actual size 17.5 x 17.5 x 0.75 inches for proper fit in track housings
• 1-inch depth compatible with single-slot filter frames
• Sold in a pack of 10 filters for stocking convenience

Compatibility

Designed as a direct replacement for 18x18x1 nominal MERV 8 pleated filters in residential and light commercial forced-air furnaces, air handlers, and return-air filter grilles requiring a 1-inch filter.

Installation Notes

Filter replacement is performed by HVAC technicians or qualified service personnel following manufacturer maintenance schedules. Set the system thermostat to the off position before removing the existing filter to prevent unfiltered air from being drawn through the system. Confirm airflow direction arrows on the filter frame align with system airflow before seating the filter in the track. Filters operating in high-dust environments may require inspection and replacement more frequently than standard intervals.