12_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification With its rapid heat-up time

With its rapid heat-up time

Weed Slayer consists of two separate products (Parts A & B) that you mix together to make one exceedingly effective weed killer

and forgiving system

Also Contains non plant food ingredient: Kelp

transfer heating/cooling

12_1/2x23_1/2x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification With its rapid heat-up timeNordic 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