17_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydroponics Yields are up and the

Yields are up and the plants look healthier going into late flower than ever before

With repeated applications or in the correct mix rates

Actual brand may vary

making each tumbler a key component of the best bud trimmer on the market

1 x Expender Station 4

17_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydroponics Yields are up and theNordic Pure Custom MERV 7 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