Harnois Industries | Greenhouse & Fabric Building Manufacturer

We are a steel structure manufacturer, doing business through two distincts divisions: Harnois Greenhouses and MegaDome. We provide greenhouse structures and equipment to ornamental and vegetable growers, as well as multipurpose fabric buildings for the protection of goods and activities in multiple market segments. We serve a varied customer base across North America, as well as parts of Africa, Europe and Asia.