11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack lighting Rated for 30 amps at

Rated for 30 amps at 120 volts

The FloraFlex Master Lighting Controller gives commercial and hobbyist growers centralized control over up to 100 ballasts per output group

Use in soils

Alarm function for environmental extremes

Balanced high-nitrate to ammoniacal nitrogen ratio to prevent excessive stem elongation

11_1/2x21x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack lighting Rated for 30 amps atNordic Pure Custom MERV 10 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