30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack light These refill sheets are compatible

These refill sheets are compatible with standard growing trays such as in the Speed Starter Kit

The controller also has the ability to simulate sunrise and sunset cycle from 10-60 minutes

Four side windows with zipper

Includes both Wet and Dry Electropolished Tumblers

Find your plant variety and rooting powder strength now

30x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack light These refill sheets are compatibleNordic 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