If the door is intended for a steam room, then the door should consist of two frames, for other rooms are made of one frame. In order to make two door frames for steam rooms, we will need horizontal and vertical bars with a cross section of 40 x 60mm. and the length should be in the width of the door leaf. We need 4 vertical bars, and horizontal 8. If there are sharp corners of the bars, then they should be removed using a bromatic milling cutter. Connections in the corners must be overlapped and spikes.