Sold under many names
Jalousie window
“JAL-uh-see”
A bank of horizontal glass slats that crank open together like a set of blinds.
What it means for you
Great airflow for an old porch, but the slats seal poorly against air and water and are easy to defeat for security — which is why they're mostly a teardown-and-replace on modern NC homes, not something you'd install new.
Where you'll see it
Older porches and mid-century homes; usually flagged for replacement.
Also sold as: louvered window
Related terms
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