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PP: Perforated Plate
Perforated Plate (common: Roar) is a special partition for air nozzle grilles and diffusers. It is a special metal baffle made of galvanized steel plate or aluminum (usually painted black). Disperse airflow distribution and, like Heilong, can cover air ducts to maintain visual beauty. . The standard size is 1220 (4 feet) long. Different lengths can also be produced according to requirements.
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