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This is a simple universal laptop stand that provides a laptop angle of 10 degrees. For most laptops, 2 of these should be enough to provide good support. The size is a cube 30 mm in size, the height is high enough to be around 20 cm from the start of the laptop.
May not be suitable for large 15' or 17' laptops - this should be tested.
If you want ventilation holes in the stand, visit the other version that has a tunnel and ventilation holes: https://www.thingiverse.com/thing:3669853