Overview: PIR cleanroom panel utilizes polyisocyanurate foam cores with sealed metal skins. Its closed-cell structure delivers superior thermal insulation (λ≈0.022 W/m·K) and improved fire resistance (up to Class 0/B-s1,d0). The seamless surface ensures particle-free cleanliness, supporting contamination control. While offering better fire performance than standard PU panels, it carries similar weight and cost considerations, balancing energy efficiency with enhanced safety for regulated cleanroom environments.