The industrial hangar of Caspian Airlines in Tehran was executed using Inab GFRC panels in the “Apasay” design, measuring 120×80 cm, in off-white color. Due to the large scale of the project, the substructure for the GFRC panels was carefully designed to properly accommodate the expansion and contraction of the underlying metal framework. To manage these dimensional changes, expansion joints were incorporated at predetermined intervals. The project was carried out during 2022–2023 (1401–1402) and successfully met both the technical and aesthetic requirements.