The SDL sound-insulating ventilator serves as a supply air duct or as an overflow opening.

They ensure the perfect operation of single-room fireplaces, as the necessary combustion air is supplied without major pressure differences. They prevent the formation of negative pressure in the living area and ensure perfect flue gas discharge via the chimney. Installed in the outer wall, they ensure demand-dependent ventilation of the living area. Thanks to the length-adjustable plug-in modules, the sound-insulating ventilator can be adapted to any wall thickness.