... concave-convex notch and crank lock,easy assemblePU foam panel for cold roomThe insulation panel, made of polyurethane, covered by SII, PVC colored ... with low installation cost.1. Much varieties and different specifications for your special needs and select. 2. Surface material: Stainless steel ... . colour steel thickness: 0.426mm,0.48 mm,0.5 mm ,0.55 mm,0.65 mm7. Panel Max. length:8800 mm8. width:1000 ...