2. Two-speed stairs - they are much more convenient than single-speed ones. Both gears are parallel to each other and are separated by a landing which has a staircase width. Two-speed stairs are ideal for both open space and the one that is limited by walls. 3. Three-story stairs - good for small spaces. They have three short runs and two landings, so that climbing them is not too tiring. This type of stairs takes up a lot of space, but they are quite comfortable in the case of high storeys. However, they have a lot of finishing elements, which is why they are not cheap. 4. Broken stairs - they are similar to single-speed stairs, but in the long run they have fewer degrees, making it easier and more convenient to move around them. This type of stairs also gives the possibility of making a small and narrow opening in the ceiling. 5. Treatment stairs - they can be placed even on a very small area, but at the expense of functionality and convenience of use. They do not have a landing, which has been replaced with wedge-shaped steps of various widths. This type of stairs is obviously more difficult and more labor-intensive to perform and assemble, which is associated with a higher price than in the case of stairs with a landing. 6. Fan stairs - they are very stylish and effective, they can form a semicircle, arc or ellipse in the plan. They look great and can be one of the main elements of the interior design. However, you must remember that they require a lot of space. 7. Spiral stairs - they have the shape of a spiral, thanks to which they do not need much space and they work well in small rooms. Unfortunately, they are also quite uncomfortable at the same time. They can be made to individual order, but there is also a wide selection of spiral stairs ready for self-assembly.