Gothic arch greenhouse 1. Structure: all hot-drip galvanized. Gothic type, round roof. Suitable for loading snow and drainage. 2. Covering material: 3-ply pe plastic film, 3 year warranty, 5 year life. 3. Ventilation: manual or auto optional. Side or roof optional. 4. All connected by offered kits. No welding required. Name: agricultural greenhouse, flower house, vegetable house, greenhouse supplier, greenhouse kits, greenhouse material, commercial greenhouse, industry greenhouse, china greenhouse manufacturer, maker, tomato house, cucumber house, greenhouse builder, green house equipment, Design by: noonty greenhouse skype: echo.2233 Container