23_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Terp Derp 6 Liters (1

6 Liters (1

clubbed antennae

SBH175 and SBC250 Sunburst systems

4-in-1 ( Temp & Humidity & CO2 & Day Night ) Sensor: Max

Perlite #3 features large coarse particles which maximize nutrient uptake

23_1/2x23_1/2x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack Terp Derp 6 Liters (1Nordic Pure Custom MERV 8 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