If you want to add a false bottom to your beloved 20 Gallon Blichmann BoilerMaker Brew Kettle in order to use it as a mash tun, this Blichmann 20 Gallon BoilerMaker False Bottom is designed especially to fit seamlessly for that exact purpose. This high quality false bottom is designed specifically for Blichmann kettles, and is necessary to convert one to a mash tun. The Blichmann 20 Gallon BoilerMaker False Bottom is made with a patent pending button louver design that is a hybrid of a perforated false bottom and a slotted manifold, combining the most beneficial qualities of both styles to truly give you the best of both worlds. MoreBeer! also sells the BoilerMaker False Bottom in the following sizes: Blichmann False Bottom for 7.5 Gallon BoilerMaker Brew Pot Blichmann False Bottom for 10 Gallon BoilerMaker Brew Pot Blichmann False Bottom for 15 Gallon BoilerMaker Brew Pot Blichmann False Bottom for 15 Gallon BoilerMaker G2 Brew Pot Blichmann False Bottom for 30 Gallon BoilerMaker Brew Pot Blichmann False Bottom for 55 Gallon BoilerMaker Brew Pot Please Note: This False Bottom is for the BoilerMaker G1 & G2 20 gal Brew Pots by Blichmann Engineering