Electric Water Heater Sizes

water heater
Water heating is a thermodynamic process using an energy source to heat water above its initial temperature. Typical domestic uses of hot water are for cooking, cleaning, bathing, and space heating. In industry, both hot water and water heated to steam have many uses.
An appliance for supplying hot water for purposes other than space heating or pool heating.
a heater and storage tank to supply heated water

electric
An electric train or other vehicle
using or providing or producing or transmitting or operated by electricity; "electric current"; "electric wiring"; "electrical appliances"; "an electrical storm"
(of a situation) exceptionally tense; "an atmosphere electric with suspicion"
a car that is powered by electricity

sizes
(size) cover or stiffen or glaze a porous material with size or sizing (a glutinous substance)
(size) (used in combination) sized; "the economy-size package"; "average-size house"
Each of the classes, typically numbered, into which garments or other articles are divided according to how large they are
Extensive dimensions or magnitude
The relative extent of something; a thing's overall dimensions or magnitude; how big something is
(size) the physical magnitude of something (how big it is); "a wolf is about the size of a large dog"