17_1/4x19_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Outlets are available in 1/2

Outlets are available in 1/2 inch (13 mm)

– Elimination of root binding

and overall plant vitality with precision-balanced nutrition

MACHINE PLASTIC LID – ORIGINAL/SILVER BULLET

When keeping bees

17_1/4x19_1/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack PH/EC/TDS Meters and Solutions Outlets are available in 1/2Nordic 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