13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack food-storage Platinium Hydroponics EBB & FLOW

Platinium Hydroponics EBB & FLOW system is designed with special drainage allowing for water to flow more smoothly

The Zenport SM913 Blue Baseball Style Vented Bump Cap has combined the style appeal of a standard cap with the safety of an ABS inner liner to create a bump cap that protects against minor bumps and scrapes

Prefer a traditional dab pen experience

encouraging the leaching of fertilizer salts during the crop cycle and reducing water-related problems

To achieve optimum efficacy

13x21_3/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack food-storage Platinium Hydroponics EBB & FLOWNordic Pure Custom MERV 12 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