its sold seperately, or in our cabinets. I have not put it up on my site yet. Matt has been busy, and we are just looking to work it in slowly. Price is $150 with 1 canister. Extra canisters are $35 each, and circulation fans are $25 each. The Accumonitor Jr. can handle any combo of fans/canisters up to 4 in total. If you need more info, send an email or call.