15x9x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting_accessories accurate and portable

accurate and portable

Dilution Solutions Nutrient Delivery System (NDS) Micro-Doser Kit – 1 1/2 in Left to Right (Hi-Flo) (PE0110MF1

250 Mini Blocks (AKA 150 strips)

and similar crops

It auto-calibrates on startup

15x9x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack lighting_accessories accurate and portableNordic 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