This is a double-sided model. The mesh does not contain degenerate faces. The mesh does not contain degenerate faces. The net does not contain n-gons. The net does not contain very short ribs. The network does not contain any edges with broken topology. The net contains no open edges. The mesh does not contain duplicate faces. The mesh does not contain faces whose direction is different from the direction of the mesh as a whole. The network does not contain separate parts. The network contains no unused vertices. Size: 30x30x4.3mm Geometry: Correct network. Double-precision closed polygon mesh: 209994 vertices, 419988 faces with normals.