Stainless Steel Interior and Powder Coated Steel Exterior Heavy-duty Design Walk-In Chamber can simulates the effects that a range of temperature change and humidity conditions( Temperature ranges from -60° C to +85° C and relative humidity ranges between 20% and 95%  ).   have on a product or material,and it usually comes in a variety of sizes, whether a small box (usually of integral construction) that fits on the bench top or a room-sized chamber (usually of penalized construction) for large objects or for testing large batches of product simultaneously.