Model: 30platelong $138+
This is a LONG, 30-plate 304 stainless heat exchanger made by Duda Diesel (this is their B3-23A). Actual dimensions, 12" long with 3" wide plates. Note that our price also includes two stainless mounting wingnuts to attach to your brew stand. There are a few port style configurations to choose from, read more...
Model: 20plateshort $63
This is a short, 20-plate 304 stainless heat exchanger made by Duda Diesel (model B3-12A-20). We like the 30 plate long, but it may not fit into everyone's budget or performance needs. The shorter 20 plate unit is appropriate if you have year round cold water, plan to use icewater, or are just on a tight budget.