13x21.5x1 Exact Size Air Filter Trimmers Available Phosphate (P₂O₅): 0%

Available Phosphate (P₂O₅): 0%

Plug & Play

injection valve

Increases the availability of nutrients

Please Note: The MBS-Pro requires the SPH-1 for supplemental power

13x21.5x1 Exact Size Air Filter Trimmers Available Phosphate (P₂O₅): 0%Nordic 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