Recent pictures show at least 3 different Escape bath windows, one slides vertically, one slides horizontally, and the awning style. Remember the awning can be left open in the rain while neither of the first 2 should be left open in the rain. As far as bringing in a hose in thru the window, they have kits that can adapt the bath sink if you want to flush out the tank, something I have never done in all my years of camping.
Due to the pandemic, my life now exists of only 3 days, yesterday, today, and tomorrow. Everything else has been forgotten!