A "Drop-In Liner" is a type of protective lining used in various applications, such as trucks and containers. It is designed to fit snugly inside the existing structure, providing a barrier against wear, corrosion, and damage. This liner can be made from materials like polyethylene or rubber, which are durable and resistant to harsh conditions. These liners are often used in industries like construction and mining to enhance the lifespan of equipment. They can be easily installed and removed, making maintenance straightforward. Additionally, drop-in liners help reduce noise and vibration, contributing to a safer and more efficient working environment.