16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack ventilation/air-conditioning 5% Odor removing capability

5% Odor removing capability

All models feature an 11

they can be slow to establish - 4-8 weeks under ideal conditions - meaning they are best used for prevention and low-level management of thrips infestations

Greenhouse & Indoor Grows – Safe for enclosed environments

16_1/2x21x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack ventilation/air-conditioning 5% Odor removing capabilityNordic Pure Custom MERV 8 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition