17_1/4x19_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification It is compatible with any

It is compatible with any growing system and presents no risk of phytotoxicity

Protected against short circuits

This lens is not for use on full/ white spectrum LED lights

Designed for optimal ergonomics

These industrial combination pH or ORP sensors use the conventional measurement technique

17_1/4x19_1/4x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack chillers-heaters-and-purification It is compatible with anyNordic 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