16_1/4x21_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Promote Grow1 Power Sprayers are ideal

Grow1 Power Sprayers are ideal for use with herbicides

Once that happens

Greensand is recommended for use on lawns

which can be costly or inconvenient

Features LED  Power Indicator

16_1/4x21_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack Promote Grow1 Power Sprayers are idealNordic 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