פחות מ בלום גובה perforated screen יותר מדי לייזר עמוד השדרה
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Amazon.com: FengYoo Perforated Metal Sheets Perforated Stainless Steel Sheet-Sheet Metal with Holes-20GA 0.4 Inch Hole 39.3 Inch X19.3 Inch-Suitable for Ventilation Smoking and Decorative Screen Style Grilles : Industrial & Scientific