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Teralis
BUILDING MATERIALS & CONSTRUCTIONbeginner
Definition
Security grille or window bar — an ornamental or functional steel grid installed over windows and openings for theft prevention. Teralis is ubiquitous in Indonesian houses, from simple welded bar grilles to ornate decorative designs. It is a standard security measure and a signature element of the Indonesian residential street facade.
Example
An Indonesian kampung house has welded steel teralis on all ground-floor windows — simple vertical bars spaced at 5 cm intervals, painted black or dark green, providing visible security while allowing light and air to enter.