21x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack spl_hw 1-8-5) has been developed with

1-8-5) has been developed with top-shelf ingredients to provide your flowering plants with high performance inputs for exceptional bud development and structure

Outputs controlling humidification and dehumidification

The fan uses a PWM-controlled EC motor that allows it to run efficiently and quietly at a maximum of 62 dBA

True Liberty Bags are Made in the USA

21x23_1/2x1 MERV 14 AC Furnace Filters 6 Pack spl_hw 1-8-5) has been developed withNordic Pure MERV 14 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 14 furnace filters are comparable to HVAC filters with the rating of MPR 2800.