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Cable Tray Ventilation Calculator

Open-area (perforation) ratio of a cable tray over a given length — a quick screening indicator of how freely a ventilated tray can dissipate heat compared to a solid-bottom tray.

AAJappsEngineering Calculation Report

Cable Tray Ventilation Calculator

Open-area ratio = open (perforated) area / total tray plan area

Generated

For preliminary engineering use only — always verify results against project-specific standards and a qualified engineer's review before use in a real design.

Tray dimensions

mm
m
m²

Ventilation ratio

Total tray plan area3.00 m²
Ventilation ratio40.0%
GradeGOOD