big ventilation grille gray wall made metal with grid like pattern |
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| navigate by keyword : ventilation grille protection system safety gray wall metal steel pattern big hvac air pass preventing debris entering airflow circulation industrial design functional durable architecture structure filter mechanical exterior barrier control technology efficiency modern environmental clean quality maintenance utility engineering construction climate cooling heating installation robust perforation secure facility operation |
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| Big ventilation grille on gray wall. Grille is made of metal, with grid-like pattern that allows air to pass through while preventing debris from entering. Black and white photo. Close-up. Copy space |
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