Snow or water entering the USL External Louvres with the airflow are directed into the tapering slots of the front grille, increasing the air velocity. The airflow are diverted into the space between the front and rear grille. The snowflakes hit the heated rear grille, which melts the snow. The melted water flows down the rear blades to the heated drip tray, from which it is led to the drain.
Very effective prevention of rainwater (97%/Eurovent) and snow (75..95%) penetration due to special labyrinth construction
Melted snow and water collection via a drip tray including a pipe connection
Detachable front grille; electrically heated rear grille
Self-regulating heating cable with an operating voltage of 230 VAC
Modular construction available for large sizes
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