what sizes still available? anyone knows

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Hi guys, after looking at the pics somemore, btw thanks to lepatliat, I realised that the window in red box above is the window for Bathroom2 for my Type D layout. The window is too low, it looks like less than 6 feet high. One can peep into the bathroom from the balcony, or when the window is open wide and jutting out the sharp edges can be of safety concern. Normally windows for bathroom are built nearest to the ceiling, does anyone know why this one is built oddly low?