EXTERNAL SUPPLY AND EXHAUST HOOD

摘要

An external supply and exhaust hood comprises a housing for placement in the wall of the building, which contains the outer part with openings for access of external air and the inner part for attachment of the duct that is installed in the hole wall of the building. Inner part additionally has an elastic cuff to secure the body in the hole of the building wall and connection to the duct, and the inner part includes fasteners for fixing the duct in the housing.