Double evaporator (up & down) to keep exactly Tº inside case, keeps humidity and temperature levels without air circulation to avoid dry out fish, ZERO CONDENSATION SYSTEM ® inside case when running, no defrost time required, reach nominal low temperature, +1ºC/-1ºC in a few minutes from switch on ANTIBACTERIAL EVAPORATOR SYSTEM DESIGN ®, made by an easyclean tube avoiding fins systems, ambient temperature for full control, aluminium external strip available in black or silver colour.