15x17x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydro Components What it does: Speeds seed

What it does: Speeds seed germination

Helps improve heat tolerance

it’s the final hydrating step

The pHEP 5 includes a dual-level LCD

15x17x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Hydro Components What it does: Speeds seedNordic 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