Opening windows are installed in most motorhomes and caravans.
The benefits: They can be opened wide in warm weather and after cooking. Opening windows offer a larger ventilation cross-section compared to sliding windows, and they are usually much better value for money. Many opening windows feature built-in 2-in-1 roller blinds consisting of a mosquito net and blackout blind. Dometic Seitz and Polyplastic are the most well-known manufacturers.
In the 90s, Seitz (now Dometic Seitz) sold complete windows for recreational vehicles with a pre-assembled double-glazed plexiglass window and built-in blackout blinds and flyscreens, which came to be known as flush-fitting windows. They can either be fully opened or are available as sliding windows. And they come in various sizes.