15x36x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hf 50 Million 1 Acre 2nd

50 Million 1 Acre 2nd Day

The BETA-8 features a high-quality remote CO2 sensor (with 16ft cable) and built-in photocell to automatically activate your supplemental CO2 system to maintain CO2 PPM levels only during daylight hours

This can provide more opportunity for nutrient availability and may increase fruit and flower production

3 year warranty

15x36x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack spl_hf 50 Million 1 Acre 2ndNordic 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