Click to expand Tap to zoom Grainfather GC4 Glycol Chiller Adapter Kit - GCA SKU 10937 Original price $308.95 - Original price $308.95 Original price $308.95 $308.95 - $308.95 Current price $308.95 | / Quantity Add to cart ย ย Convert almost any fermenter to be compatible with the Grainfather GC4 and wirelessly controllable via the Grainfather app!