17x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack microbes They are designed to accommodate

They are designed to accommodate 2' x 4' propagation rafts ("lettuce rafts")

as a growth regulator/hormone disruptor ( it prevents normal hormone releases that trigger growth and maturation) and as a smotherant (insects that coated with neem oil will suffocate)

Botanicare creates a highly effective fertilizer and growth stimulator

3/4" outlet only

allowing each tumbler to consistently turn with ease at just the right speed

17x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack microbes They are designed to accommodateNordic 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