12_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES They remain effective in a

They remain effective in a wide temperature range from 59°F to 95°F (15°C to 35°C)

Perfectly spaced diodes achieve the best foot print possible and UV and IR provided from the fixture create a well-rounded resinous plant

Athena Pro Grow is a balanced soluble fertilizer blend formulated for commercial cultivators to streamline irrigation

cucumbers and all sorts of flowers

It does not change the taste or smell for humans or livestock

12_1/2x23_1/2x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack AIR FILTER BOXES They remain effective in aNordic Pure Custom MERV 14 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