11_1/2x11_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films This single shelf is used

This single shelf is used to add or replace a shelf in the Vertical Grow Shelf system

Two strips in array per shelf

Use for members of the Ericaceae or Heath family such as azaleas

nurseries and indoor growing

non-slip base

11_1/2x11_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Reflective & Greenhouse Films This single shelf is usedNordic Pure Custom MERV 10 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