15x30_5/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LUXX 200W BAR The HLG BlackBird is the

The HLG BlackBird is the first one that actually lives up to the spec sheet

The Hydroponic Micro Snip is a compact tool for fine

HO (high output) lighting fixture

real-time feedback in the field

PhysioSpec Greenhouse: 190 μmol/s

15x30_5/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LUXX 200W BAR The HLG BlackBird is theNordic 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