23_1/4x29_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Nutrients Don't let old school methods

Don't let old school methods keep you from upgrading today

square wave technology

To make the most out of your nutrients use pH-Up and pH-Down to regulate your pH

Daystar features:

0 mils these gloves are ideal for working with harsher chemicals

23_1/4x29_1/4x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack Nutrients Don't let old school methodsNordic Pure Custom MERV 8 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