Square wall sleeve made of EPP, 320 x 320 mm, length 480 mm, to be adapted on site to wall thickness 420~480 mm, including accessories for adapting the ventilation unit to the wall thickness (breakthrough in external wall 325 x 325 mm) and UV-resistant external wall panel with drip edge made of plastic with integrated condensate drainage (348 x 365 x 55 mm). Connection of an adjoining room through supply air or exhaust air duct with ventilation pipe of nominal width DN75.
