What are the common hole diameters for perforated boxes?
- Electrical/Equipment Enclosures (Heat dissipation + dust protection): For 0.8-1.5mm galvanized/stainless steel, use φ3mm, φ4mm, or φ5mm (most common). Center distance: 6-10mm; open area ~30% (blocks fingers & large debris while venting).
- Motor Guards / Fan Boxes (Ventilation focus): For 1.2-2.0mm plate, use φ6, φ8, or φ10mm for high-volume airflow.
- Filter/Sieve Boxes: Fine dust (0.5-0.8mm plate) uses φ1.5-2mm; coarse screening uses φ5-10mm (up to φ12-20mm for large materials).
- Decorative Perforated Boxes (Speakers/Covers): Mostly φ2, φ3, or φ4mm, with a 30-40% open area for aesthetics.
