Nest stand with sona filter roll-up and heat recovery unit

Photo: Mariusz Młynarczyk / CloudAir.tech

Visitors gather in front of the Nest stand, where a roll-up marked "Produced by Nest." promotes the "sona° filter" against "SMOG, ODOR" with adsorption. A white heat recovery unit with round spigots sits on the right beside a "Swedish ventilation" roll-up carrying the Fresh logo.