Designed to fit very neatly into the window. It is fully adjustable but doesn’t click at top or bottom so there is a slight gap. I had a problem when installing because the string is very tight and the last clip was awkward to place above my head while standing on a ladder. The string loop slipped off the plastic clip and suddenly I had strings everywhere. I had to dismantle the whole thing and sort the strings out on a table, then start again.
