This stainless cooling coil is 3 5/8" wide and 27" long, and fits a variety of fermenters, including the Fermzilla by KegLand, and the FerMonster by Vintage Shop.
The hole diameter needed for the tubing bulkheads is 7/8" or 22mm. These holes can be easily cut with our Step Drill, item C67, or buy our Temp Twister Lid which has holes already molded in. These holes can be easily cut in our Siphonless Fermenter Lid item E74, or Fermonster Solid Lid item P22.
The stainless tubing itself is 9.8mm (.37") in diameter, and Duotight bulkheads are included to attach the pipes to your fermenter lid. You can also attach 3/8" tubing with hose clamps if desired to the tubing ends to run your cooling or heating water.