15x23x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack growing-accessories Easy to use hand-held design

Easy to use hand-held design

REVOLUTION: 1

- 1000w super HPS

flat surface making them perfect for writing on

Dimming/boosting wattage control

15x23x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack growing-accessories Easy to use hand-held designNordic Pure Custom MERV 8 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