I'm living in an apartment where my bedroom has no windows opening to the outside of the building, only one window which opens into the living space.
As such, the room is tough to ventilate and gets noticeably warmer than the rest of the apartment.
I've bought a portable air conditioning unit (10,000BTU, standard 6" diameter exhaust hose) and extension hose, and I want to vent the exhaust air out the window into the living space. I realise this isn't ideal but it's much easier to ventilate the living space.
I need to seal the window to stop the hot exhaust air coming straight back in, and the cold air escaping out the open window. The problem is, due to the style of the window, regular sealing kits for air conditioners won't fit.
Here's the window:
I've been looking at dust covers for doors but they're all too large. Has anyone got any ideas how I might seal the window while still allowing a relatively airtight gap for the exhaust hose to be put through?