GorillaBox 250mm Acoustic Box FanGorillaBox 250mm (10") Acoustic Box Fan The GorillaBox is a properly built acoustic box fan that takes the best of existing designs and wraps them in 18mm MDF with a premium Torin fan at the core. For growers who've lived with noisy extraction and finally decided to sort it out this is the one that makes a tent in a spare room genuinely unnoticeable from the next room. Why growers choose the GorillaBox 250: 18mm MDF acoustic housing heavy, dense,