16_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage Cool running design-position light closer

Cool running design-position light closer for healthier

shade and ornamental trees

a programmable setting to control the cool-down period of the HID bulbs in the event of a power interruption to prevent damage to your bulbs

Specially designed articulating four-bar compound linkage

Can be used on the following plants:

16_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack food-&-water-storage Cool running design-position light closerNordic 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