This is a digital 3D model of a portcullis, which is the gate that dorps down vertically to protect the castle entrance. This was created using Blender.
BLEND (Blender, filesize: 8.85 MB), OBJ (OBJ, filesize: 7.49 MB), FBX (Autodesk FBX, filesize: 2.56 MB), DAE (Collada, filesize: 14.9 MB), STL (Stereolithography, filesize: 5.94 MB)