Nordic Pure 20x20x5HM8-4 Merv 8 Air Filter 4 Pack

Product Description

The NORDIC PURE 20x20x5HM8-4 is a MERV 8 rated pleated air filter designed for residential and light commercial HVAC systems. Sold in a 4-pack, it carries a nominal size of 20x20x5 inches with an actual size of 19.63 x 19.88 x 4.38 inches - a critical distinction for deep-filter housings where nominal and actual dimensions differ significantly. The filter media is hypoallergenic, antimicrobial, and electrostatic, capturing lint, dust, pollen, pet dander, dust mites, bacteria, and mold spores on each pass. The frame is constructed from heavy-duty, moisture-resistant beverage board with a metal mesh support grid bonded to the pleats for structural integrity.

This filter is intended for deep-filter media cabinets commonly found in residential forced-air systems. It is a direct replacement for Honeywell 20x20x4 filters and other filters with an actual depth of 4.38 inches. The MERV 8 rating is equivalent to an MPR 800 rating, making it a measurable upgrade over standard fiberglass, poly disposable, and non-electrostatic washable filters. Compatible systems include those manufactured by Honeywell, Lennox, Carrier, and Bryant that accept a filter with these actual dimensions. Always measure the existing filter or the housing before ordering, as actual dimensions vary by manufacturer.

Key Features

• MERV 8 filtration equivalent to MPR 800 - captures pollen, pet dander, dust mites, bacteria, and mold spores
• Actual size 19.63 x 19.88 x 4.38 inches fits deep-media cabinets with a nominal 20x20x5 opening
• Hypoallergenic, antimicrobial, and electrostatic filter media inhibits mold and bacteria growth
• Heavy-duty moisture-resistant beverage board frame with bonded metal mesh pleat support
• Sold as a 4-pack - recommended replacement interval every 3 to 6 months
• Made in the USA

Compatibility

Designed as a replacement for Honeywell 20x20x4 filters and other filters with an actual depth of 4.38 inches. Compatible with deep-media filter cabinets in systems by Honeywell, Lennox, Carrier, and Bryant that accept this actual size. Verify actual dimensions of the existing filter or housing before installation, as nominal sizing varies across manufacturers.

Installation Notes

Installation is performed by HVAC technicians or qualified service professionals. Power down the furnace or air handler at the disconnect or thermostat before servicing the filter cabinet. Confirm the actual filter dimensions match the housing slot - do not force an oversized filter into the cabinet as this can bypass filtration and restrict airflow. Follow local codes and manufacturer guidelines for service intervals; replacement every 3 to 6 months is a general baseline that varies with occupancy, pets, and indoor air conditions.