17_1/4x29_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays and a solenoid valve

and a solenoid valve

Available in 80% red or 90% red

for maximum energy efficiency

Using a unique organic extraction method

Outdoor and Hydroponic UseUse on:Spider MitesOther MitesThripsFungus GnatsMealybugsAphidsPowdery MildewCaterpillarsWhitefliesScaleAnts

17_1/4x29_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack trays and a solenoid valveNordic 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