How do I add a window in a 3D Drop-In Liner?

Windows are becoming an increasingly popular feature, but at this time, we do not have a recommended system for installing them. To the best of our knowledge, no manufacturer has yet developed a reliable method that creates a secure, long-term mechanical seal to the liner itself.

Some customers have used silicone to adhere windows to the liner, but we do not have long-term testing to confirm whether this method will maintain a watertight seal or last for the full lifespan of the liner.