28x34x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ac-/-dehumidification-/-humidification This grate is 14" in

This grate is 14" in diameter

Set total cycle from one of the four preset settings: 12 hours

Quality spectrum allows for start to finish plant growth

fungal multiplication takes place through formation of hyphal bodies in the host hemocoel

Trinity is a distinctive formula of complex carbohydrates with soy protein and humic acid extracts combined to encourage plant growth and vigor

28x34x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack ac-/-dehumidification-/-humidification This grate is 14" inNordic Pure Custom MERV 7 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