Admittedly, roller doors have been around for decades; therefore, they are not something new in the market. That has not stopped the growth of roller doors' reputation as a sturdy, protective addition to main entryways in homes. Part of this can be attributed to the many designs available for homeowners to choose from. One such model is the flush-mounted roller doors. Also referred to as invisible roller shutters, flush-mounted roller doors are commonly found in modern home architecture.