14_1/2x19x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories and easy to store

and easy to store

Pure results

Suggested Uses: Use this biostimulant to maximize a crop's performance in all types of environments and growing conditions

You need to add nutrients when you first water the substrate (use your nutrient supplier's recommendations)

000 Watt High Pressure Sodium double-ended Lamp S52 155

14_1/2x19x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Growing Accessories and easy to storeNordic 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