17_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydroponics specially upgraded and designed to

specially upgraded and designed to provide the perfect lighting environment for all your precious water creature

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

pink snow mold)

1 x Expender Station 4

With repeated applications or in the correct mix rates

17_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydroponics specially upgraded and designed toNordic 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