28x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal Pot size is ideal for

Pot size is ideal for tomatoes

Not only are they non-toxic and often biodegradable

CaMg+ helps optimize plant nutrition resulting in enhanced growth and healthier flowers and fruits

* Adhesive/Sealant: LOCTITE 5510 (sold seperately)

28x28x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack X Nutrients Grow Spray 1 Gal Pot size is ideal forNordic 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