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One continuous and corrosion resistant helix wire is placed in the duct wall for structural support
Calibration of pH can be with 2 or 3 points
Expand your ebb & flow system up to 48 plant sites on one control unit—depending on reservoir size—control unit and reservoir sold separately
50 packs per box
Duct Size: 8” | Dimensions: 8
13x23x1 MERV 13 AC Furnace Filters 6 Pack Tubing One continuous and corrosion resistantNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200
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