The image displays an attic interior within a building in Sokolovo, Bulgaria

The image displays an attic interior within a building in Sokolovo, Bulgaria. The space features exposed wooden roof rafters and ceiling joists, with a floor constructed of oriented strand board (OSB). A prominent, large rectangular HVAC duct, wrapped in clear protective plastic, extends horizontally across the foreground and mid-ground, supported by metal stands. In the background-left, an HVAC air handler unit is visible, connected to white hoses, with a plastic water bottle resting on its surface. Several flexible, silver-foil insulated ducts are arranged along the floor in the background. Illumination is provided by a bright, square-shaped LED work light suspended from a wooden beam, located in the mid-right. A black electrical cable reel sits on the OSB floor near the light. Documentation or manuals are discernible atop the far end of the main duct. No human presence is observed. The scene indicates an ongoing or recently completed HVAC system installation.