18x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 6 Pack lighting_accessories Use High Altitude model at

Use High Altitude model at 4500 ft elevation or above

Reduces total clean time to 5 minutes from 60 minutes

HI11310 glass body refillable pH electrode with temperature sensor

Speed up the flowering and fruiting stage

sponge mop or chemical spray device or by immersion so as to thoroughly wet all surfaces

18x24x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 6 Pack lighting_accessories Use High Altitude model atNordic Pure 18x24x4 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that will attract and capture most airborne particulates in your home. It will help eliminate unwanted odors as well as trap most airborne dust and particulate matter for fresh, clean air. Odorous gases and vapors (VOC) are attracted to and held by the activated carbon material while