This type of cassettes was first presented at the MosBuild 2022 exhibition. This complex geometric shape with perforation can be also completed with an interactive illumination. The complex form has an ingenious simplicity. A 3D geometric shape with flat edges is the basis of a 3D cassette for hinged facades. The matrix of a perfect model has been embodied in the material for the exterior design. The refraction of light in each edge of the prism creates a unique pattern, gives the building a futuristic look and emphasizes the uniqueness of the architectural style. The constructiveness of the elements is among the undoubted qualities, which allows using the Tetrahedron cassettes in modern architecture.