It isn't uncommon in older windows for your upper sash for being fastened in position, though the lower sash stays operable. The expression "sash windows" is employed interchangeably Together with the phrase "box sash windows" in the uk, and often used to explain a similar issue. Plantation shutters – Plantation https://eyebrow-shaping-tools99765.ssnblog.com/35077306/sash-window-draught-proofing-secrets