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The GLASFLOSS 18X20X1PL40 is a Z-Line Series standard-capacity pleated air filter rated MERV 10 per the ANSI/ASHRAE 52.2 test standard. Measuring 18 x 20 x 1 inches, it is designed for residential and light commercial HVAC systems where improved particulate capture is needed without excessive airflow restriction. The filter media is constructed with fibers that do not absorb moisture and will not support microbial growth, making it a reliable choice for consistent air quality in occupied spaces. HVAC technicians and facility maintenance personnel install this filter as a direct drop-in replacement during routine service calls.
The Z-Line Series pleated filter is suited for forced-air heating and cooling systems in residential homes, apartments, and light commercial applications. It fits standard 18 x 20 x 1 inch filter slots found in return air grilles, air handlers, and furnace cabinets. The MERV 10 rating means it captures a broad range of airborne particles including dust, pollen, mold spores, and lint, making it appropriate for general HVAC maintenance programs and IAQ improvement projects where a mid-range filter is specified.
Designed as an OEM-style replacement pleated filter for residential and light commercial forced-air HVAC systems accepting a nominal 18 x 20 x 1 inch filter.
Pleated air filters of this type are installed by HVAC technicians or qualified maintenance personnel. Always power down the air handler or furnace before replacing the filter. Confirm airflow direction arrow on the filter frame aligns with the direction of airflow toward the blower. Follow local codes and equipment manufacturer guidelines for recommended filter replacement intervals.
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