Reversible windows, also called top-turn windows, open just like top guided windows, but can be turned 180 degrees to be cleaned from the inside. Reversible window sliding brackets allow for 180 degree turn function, and can be advantageous if it is difficult to reach the window from the outside, e.g., due to height or other obstacles. There is no friction brake in the bracket and top-turn position therefore may not be used for ventilation. The window comes with a protector that stops opening at approximately 10 cm. By releasing the protector, the window can be turned all the way around, and thus can be cleaned from indoors.