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casement sash
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casement sash

architecture
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Quick Summary

A casement sash is a component of a casement window, which is one of the earliest types of movable windows. This type of window features a frame with hinges on one side, allowing the sash to open outward or inward like a door.

Historically, English casement windows often opened outward and were made of small, leaded panes. French casements, designed to open inward, were adapted in the United States as French windows or doors, frequently used to access balconies or porches. Unlike sash windows, which slide vertically, casement windows pivot on side hinges.12

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