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Ships within 48 hours · Estimated delivery Aug 9 - Aug 14
0–5000 ppm (500 ppm)
15 min intervals
Max-Duct is the strongest duct on the market and with a cost similar to the leading competitors' 3 ply ducting
Contains mycorrhizae mycorrhizal inoculum (glomus intraradices) and biofungicide (bacillus pumilus – strain GHA-180)
sulfur and heavy metals—great for city or well water
Speedster Variable Speed Control (24/Cs) 0–5000 ppm (500 ppm)The Speedster is great multi purpose speed control. Three settings include off, on (full) and variable. Simply use the dial to increase or decrease fan motor speed. 120 V 15 Amps.
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