8_7/8x19_1/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking Hydrofarm's Fan Speed Adjuster was

Hydrofarm's Fan Speed Adjuster was designed especially for centrifugal fans

Data Logging

These Pairidaeza (architectural style of garden design) consume carbon and produce both food and oxygen

Three years in and it's never missed a beat

| 105W | Inc

8_7/8x19_1/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking Hydrofarm's Fan Speed Adjuster wasNordic 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