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The NORDIC PURE 18x20x1PolyGreen-3 is a MERV 6 polyester air filter sold in a 3-pack for residential and light commercial HVAC systems. Each filter carries a nominal size of 18x20x1 inches and an actual size of 17.75 x 19.75 x 0.75 inches. The polyester green media captures dust, pollen, lint, and other common airborne particles, helping to maintain airflow efficiency while reducing the load on downstream components. These filters are manufactured in the USA from environmentally responsible materials, making them a practical choice for contractors and facility managers who prioritize sustainable supply sourcing alongside reliable filtration performance.
These filters are suited for standard 1-inch filter slots in forced-air furnaces, air handlers, and central air conditioning systems in residential and light commercial applications. The MERV 6 rating targets larger particulate matter including dust mites, mold spores, and pollen, making them a solid baseline filtration option for general-purpose installs. The 3-pack format reduces service call frequency and provides a convenient on-hand supply for routine filter change schedules. HVAC technicians and facility maintenance staff commonly stock these for recurring preventive maintenance agreements.
Designed as a replacement filter for residential and light commercial forced-air systems with a standard nominal 18x20x1-inch filter slot. Verify the actual filter opening dimensions against the listed actual size of 17.75 x 19.75 x 0.75 inches before installation.
Filter replacement should be performed by a qualified HVAC technician or trained maintenance personnel following the equipment manufacturer's service instructions. Power down the air handler or furnace at the disconnect or thermostat before opening the filter compartment. Install with the airflow arrow on the filter frame pointing toward the blower, away from the return air stream. Follow local codes and the equipment manufacturer's recommended change interval, typically every 30 to 90 days depending on system runtime and environmental conditions.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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