16_3/8x21_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack -monitors-&-timers The most advanced T5HO lighting

The most advanced T5HO lighting combo available

Orchards & Berry Production – Broadcast around fruit trees

- Work With any Ballast

sturdiness

36"" or 48"" Tube Length

16_3/8x21_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack -monitors-&-timers The most advanced T5HO lightingNordic Pure Custom MERV 7 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