29x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking and air to the medium

and air to the medium while blocking light

• Great lumen output for high PAR values

000-hour lifetime rating

This allows the end user to mix for white light with specific frequencies to aid in vegetative and flower growth

Effective for aphid control

29x35x1 MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_spectrumking and air to the mediumNordic Pure Custom MERV 14 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