23_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Monterey Lawn & Garden Products * Water shortage alarm

* Water shortage alarm

Ultra-Fine Mist - up to 200 pints per day output

Thinnest Grodan product available

For rooms up to 100

This water pump is oil-free to prevent nutrient reservoir contamination

23_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Monterey Lawn & Garden Products * Water shortage alarmNordic Pure Custom MERV 7 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