Air conditioning pipe for a casement window solution! Cheap and simple.

Having bought the Homcom air conditioner I realised my windows were not suitable for the window fitting provided. Having seen videos using Perspex and screws I decided to try this with a sheet of polycarbonate and double sided Velcro. Sheeting was £13.45 from Homebase Velcro was £6.99 from Amazon. I have a window kit for another room but wanted something I could easily move from room to room. Thanks