What are the best options for double doors with a built-in dog door?

The best options for double doors with a built-in dog door are typically custom-made doors from reputable manufacturers that offer durability, security, and energy efficiency. These doors are designed to accommodate both human and pet traffic, providing convenience and ease of use for both. It is important to consider factors such as size, material, insulation, and security features when choosing a double door with a built-in dog door.