16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack extension keep these leaves in the

keep these leaves in the greenhouse until new parasites emerge

(100-400 per square meter)

Canvas Density 1680D

Cloches both in fleece and in polythene protect against frosts and act as a barrier against pests

The well-designed air porosity and water retention qualities of this peat/coir-based medium reduce irrigation requirements and allow growers to react efficiently to a challenging environment by reducing irrigation costs and increasing productivity

16x21_1/2x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack extension keep these leaves in theNordic 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