Visitors talk beside O.Erre black columns with VMC heat recovery units

Photo: Mariusz Młynarczyk / CloudAir.tech

Tall black columns carry the O.Erre logo and wall-mounted ventilation units. Panels read "VMC", "DIAMOND", "ICON" and "Decentralized heat recovery unit" with German translations, and a forest image screen glows between the columns. Visitors gather in conversation at the stand edge beside the busy aisle.