18x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sprayers and Wands Patent-pending technology embedded within each

Patent-pending technology embedded within each fixture enables control of up to 2

AMP-2 Sensor Board:                                   Max

Input Voltage:                        12VDC

Use this product with pH electrodes with a BNC connector and TDS probes with a DIN connector

18x28x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Sprayers and Wands Patent-pending technology embedded within eachNordic 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