11x32_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements It is recommended to be

It is recommended to be used within 30 days of opening

61" Tall while Hanging

It features a large LCD that clearly displays the parameter being measured as well as calibration instructions

The Hurricane Pro 16 in High Velocity Oscillating Metal Wall Mount Fan is a great space saver

Probe cleaning and correctly storing pH probes ensures you get the most accurate readings possible and will maximize the life of a probe

11x32_1/2x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements It is recommended to beNordic Pure Custom MERV 14 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