Help Identifying Frame Inside Inner Window Frame Post questions and find answers on glazing, double glazing, upvc glazing, conservatory glazing, fixtures and fittings etc....

[diyquery]

Can someone please explain this to me? It's some kind of a frame inside the frame; it looks ugly and not very practical. It's before my time.. it was a bodge-job? How to correct? I'm thinking of getting a new window...