Square wall sleeve made of EPP, 320 x 320 mm (breakthrough in external wall 325 x 325 mm), length 480 mm, to be adapted on site to wall thickness 320 - 480 mm, including accessories for adapting the ventilation unit to the wall thickness and UV-resistant external wall panel made of plastic with drip edge and integrated condensate drain (348 x 365 x 55 mm). Wall sleeve and external wall panel (fire class B2) are functionally necessary for the installation of the ventilation device.
