This utility model discloses an integrated multi-unit laminar flow air supply device, comprising: a laminar flow air supply body, an
airflow handling system, an installation interface flush with the building ceiling, a lateral return air duct, and a flow
equalization structure; wherein, the laminar flow air supply body is fixed flush with the
cleanroom ceiling via the installation interface, the
airflow handling system is integrated inside the laminar flow air supply body, and the lateral return air duct is used to connect to an external return air duct. The device provided in this application, by installing flush with the ceiling, can solve the problem of excessively high equipment height in areas requiring laminar flow cleanliness due to limited
cleanroom ceiling height.