8_7/8x19_1/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements For rooms up to 40

For rooms up to 40

Bloom A has been validated in multi-site trials showing measurable improvements in plant biomass

Designed specifically for electronic ballasts

each consisting of a round 2-gallon pot with ½" fittings

The LED grow light bars are UL-rated for damp locations and are 0-10V dimmable

8_7/8x19_1/8x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack Nutrients and Supplements For rooms up to 40Nordic 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