The simplicity of design is always on display with a casement window. This operating type of window provides maximum ventilation and allows the sash to be opened outward to the left or right.
For windows which open inwards from the top, the solution is Bella Green's Bottom Hung windows.
They have concealed hinges at the bottom. which allow the top to tilt inwards
he Bella Green Tilt Turn window is a European-style window with two distinct functions: swing it in like a door or tilt the top of the sash into your room for ventilation
The opening handle is conveniently placed at the top of the window and also controls ventilation, giving the option of fresh air flow even when the window is locked and secure.