What is a clean room ceiling grid and what is its primary purpose?

A clean room ceiling grid is a modular suspension system, typically made from extruded aluminum or steel, designed to support HEPA filters, light fixtures, and ceiling tiles in controlled environments. Its primary purpose is to maintain air quality by restricting air movement between the plenum and the cleanroom workspace, often featuring factory-applied gaskets for a positive seal. These grids are suitable for ISO Class 3 to 8 cleanrooms and are used in applications like pharmaceuticals, electronics, food processing, and data centers to ensure low particle contamination.