17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_dakine420 Elite Resin D provides the

Elite Resin D provides the vital ratio of phosphorous and potassium to support both photosynthesis and the natural shift from vegetation to bloom

portable reverse osmosis system

VermiFire performs above and beyond the call of duty

Optional Remote Monitors - DH18082 (Model 8082) Temperature/Humidity Sensor Module

1 x Full Spectrum Quantum Sensor

17x28x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_dakine420 Elite Resin D provides theNordic Pure Custom MERV 12 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