The ventilation opening integrated into the side of the window frame ensures discreet but effective ventilation - invisible from the outside

Marley Poly-Net Laubstop is simply placed curved upwards in the gutter and clamps itself in the gutter due to its inherent tension

article 317014 is additionally required

With the external corner

Touchpad operation

Marley Air 4.0 Frischluft-wärmetauscher The ventilation opening integrated intoThe Marley Air 4. 0 a decentralized ventilation unit made in Germany with heat recovery of up to 80%. It impresses with particularly low operating noise and high performance with low consumption (energy efficiency class A). Tool free maintenance makes the Air 4. 0 the perfect solution for do it yourself installation. Fresh and healthy indoor air at all times and protection against mold growth: Decentralized systems for controlled domestic ventilation