As modern homeowners place increasing importance on open-plan layouts and indoor-outdoor integration, sliding patio doors ...

"With bi-fold doors, there are more moving parts and panels, which can make it harder ... maintenance to keep the doors ...

If you have an existing sliding glass patio door in need of repair ... more insulation and are more energy-efficient. Multi-panel: $2,500 to $6,500. This includes telescoping or bifold doors ...