Replacing Patio Sliders With Bifold Doors Can Be Costly "Sliding door replacements with folding systems range from $3,000 to $10,000, depending on door size, door material involved, and the amount ...

Open to Light, Air and Space As a pioneering manufacturer of bi-folding doors, the company from Melle, Germany, can look back on over 40 years of successful "Made in Germany" product engineering.