16_1/2x22x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments a 30 second preset time

a 30 second preset time delay between the 2 lighting outputs to reduce start-up surges/high in-rush currents

These fixtures are great for commercial sized operations all the way down to your starter garden at home

【OPTIMAL FULL SPECTRUM LIGHT】Consists of 660nm red light

5-inches to 35

* Easy to install and low maintenance

16_1/2x22x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments a 30 second preset timeNordic Pure Custom MERV 14 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