Soleus Micathermic Panel Heater

soleus
a broad flat muscle in the calf of the leg under the gastrocnemius muscle
A broad muscle in the lower calf, below the gastrocnemius, that flexes the foot to point the toes downward
adjective, Latin solea = flatfish or sandal; hence soleus muscle which does not enter the sole of the foot, but resembles the fish.
In humans and some other mammals, the soleus is a powerful muscle in the back part of the lower leg (the calf). It runs from just below the knee to the heel, and is involved in standing and walking.

heater
device that heats water or supplies warmth to a room
A fastball
A person or thing that heats, in particular a device for warming the air or water
A conductor used for indirect heating of the cathode of a thermionic tube
fastball: (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke"
A heater is object that emits heat or causes another body to achieve a higher temperature. In a household or domestic setting, heaters are usually appliances whose purpose is to generate heating (i.e. warmth). Heaters exists for all states of matter, including solids, liquids and gases.

panel
A thin, typically rectangular piece of wood or glass forming or set into the surface of a door, wall, or ceiling
decorate with panels; "panel the walls with wood"
A flat board on which instruments or controls are fixed
sheet that forms a distinct (usually flat and rectangular) section or component of something
empanel: select from a list; "empanel prospective jurors"
A thin piece of metal forming part of the outer shell of a vehicle