Fleurelle E321 -

A useful piece of information about the would be: The Fleurelle E321 is typically a 3-speed fan coil unit (often 2-pipe or 4-pipe system) designed for ceiling or wall mounting, commonly used in hotels, apartments, or offices for individual room climate control. It is compatible with standard thermostats and has a compact, low-noise design.

It looks like you're referencing — a specific model or product code, likely related to ventilation , fan coils , or air handling units (common in HVAC systems, especially from brands like Fleurelle, which is known for compact fan coil units). fleurelle e321