14x18x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack veg nutrients The enhanced DE technology will

The enhanced DE technology will give your garden the most optimal blue spectrum available on the market today

and any air system that requires half-inch (1/2") air condition filters

ACTIVE AQUA PREMIUM RESERVOIR COVER

• Easy to use monitor that measures pH

For bouquet makers

14x18x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack veg nutrients The enhanced DE technology willNordic 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