20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack cube Seaweed is an optimal plant

Seaweed is an optimal plant growth stimulant

Adjustable velcro closure

Made under quality control at Grodan factories

widespread 90-degree oscillation action

and can be used as needed

20_1/2x25_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack cube Seaweed is an optimal plantNordic Pure Custom MERV 12 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