Mammoth Foam Box Fan KitMammoth Foam Box Fan Kit Perfect For Those Growing Big Mammoth Foam Box Fans are a game changer for those looking to grow on a large scale; they're solid, reliable and kick out huge amounts of air, making them a fan favourite with larger growers for decades. What's in our Mammoth Foam Box Fan Kit? We've paired the Mammoth Foam Box Fan with everything you need to get the best out of them, including the fan, a Mammoth carbon filter, a five metre length