Ø 158 x 1 mm., stainless steel. Suitable for 3box wall box UEBR. Safety-relevant component.

The UEBRES intervention protection must be used if the distance between the air outlet opening of the fan and the air outlet opening of the wall box is less than 900 mm for a straight exhaust air duct. 

With the intervention protection, BORA offers complete safety when a wall box is installed in the immediate vicinity (duct distance <= 900 mm) of a fan motor.