21_1/2x23_5/16x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lighting Treat your root zone with

Treat your root zone with respect and your other problems will simply go away

• OMRI Listed and Compliant for use in organic farming

SNS-604A & SNS-604B will also encourage beneficial microbial activity in the root zone

The purchase of a full sized greenhouse is undoubtedly a very large financial investment

The HumTea Brewball enables gardeners to create potent liquid fertilizers

21_1/2x23_5/16x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Lighting Treat your root zone withNordic Pure Custom MERV 13 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