A joy to use! We call this a Gravity BrewSculpture because there are no pumps involved as the flow of liquid is gravity driven all the way into the fermenter. This sculpture comes with 15 gallon kettles, but these can be used to brew any sized batch between 5 and 10 gallons. The burner is designed to hold any kettle diameter over 11 inches and height up to 15 inches. Pros And Cons Versus other Styles Pros: Ease of use. These system are very simple to operate. A huge benefit of this system is its size. The foot print is 2 ft x 3 ft so it will fit almost anywhere. The height of the Mash Tun (where grain gets stirred in) is low so no ladders or steps are needed. Does not require a pump so you can brew without needing an electrical source. Cons: Not available for a 20 gallon system. Doesn't come with a pump so it isn't ideal for doing recirculation mashes. Does not allow for the control or flexibility the Digital Packages can offer. Base Dimensions: 54" Tall (Does not include height of kettles) 25" Deep 36" Long BrewSculpture Includes: Stainless Steel Frame 15 Gallon Heavy Duty Kettles Analog Thermometers on All Kettles Maximizers in All Kettles Propane Gas System (Compatible With Low and High Pressure Propane) These BrewSculptures are not intended for indoor use!