Nordic Pure 18x24x4M8-1 Pleated Air Filter Merv 8

Product Description

The NORDIC PURE 18x24x4M8-1 is a MERV 8 pleated air filter designed for residential and light-commercial HVAC systems including gas furnaces, air handlers, and central air conditioning equipment. The filter media is electrostatically charged synthetic material that captures airborne particulates ranging from 3.0 to 10.0 microns in size. The nominal size is 18x24x4 inches with an actual size of 17.5 x 23.38 x 3.63 inches. A heavy-duty, moisture-resistant beverage board frame holds the pleated media, and a bonded metal mesh support grid keeps pleat geometry stable under airflow. Licensed HVAC technicians and knowledgeable homeowners both install this filter type during routine preventive maintenance.

This filter is suited for residential forced-air systems where moderate particulate control is required. It captures lint, household dust, pollen, dust mites, pet dander, bacteria, and mold spores on each pass through the media. The MERV 8 rating is equivalent to the MPR 800 rating scale used by some other manufacturers, making cross-reference straightforward for technicians sourcing replacements. Nordic Pure recommends changing this filter every 3 to 6 months depending on indoor and outdoor conditions, occupancy, and whether renovation work is occurring in the space.

Key Features

• MERV 8 electrostatically charged synthetic media captures particles from 3.0 to 10.0 microns
• Hypoallergenic and antimicrobial filter media inhibits bacteria and mold growth within the media
• Heavy-duty moisture-resistant beverage board frame resists deformation in humid air streams
• Bonded metal mesh support grid maintains pleat structure and prevents media collapse
• MERV 8 rating is equivalent to MPR 800 for cross-reference purposes
• Made in the USA

Compatibility

Designed as a direct-fit replacement for residential and light-commercial forced-air systems that accept a nominal 18x24x4-inch filter. Verify the actual filter slot dimensions against the actual size of 17.5 x 23.38 x 3.63 inches before installation, as nominal and actual sizes differ.

Installation Notes

Power down the furnace or air handler at the disconnect or thermostat before removing the existing filter. Note the airflow direction arrow printed on the filter frame and orient the replacement to match airflow toward the blower. HVAC technicians should verify the filter slot dimensions using the actual size, not the nominal size, to confirm fit. Replace every 3 to 6 months or more frequently in high-dust or renovation environments to maintain system efficiency and indoor air quality.