16_1/2x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pumps-&-irrigation Gro Pro® Essential Round Fabric

Gro Pro® Essential Round Fabric Pots feature breathable fabric allowing for faster plant growth through better access to oxygen

Features a black anodized aluminum faceplate

The microbes contained in SOS will promote stronger and faster root

but designed specifically for HypoTek ballasts

The MS grow light can be externally controlled with digital lighting controller featuring light timing

16_1/2x22x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack pumps-&-irrigation Gro Pro® Essential Round FabricNordic Pure Custom MERV 13 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