16x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking The design consideration for the

The design consideration for the HI12943 is ideal for pH measurements in soils and hydroponics growing media including rockwool

Similar to the CenturionPro® Original

Featuring the same performance and 8-bar configuration of our bestselling Pro 1700e LED

and secondary metabolite production

Additional Control Measures: Sticky Thrips/Leafminer Traps and Monterey Garden Insect Spray are also recommended to achieve complete control

16x22_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking The design consideration for theNordic Pure Custom MERV 13 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