We have 5 sets of French doors in our house. BIL had fiberglass in his new house and we just didn't like the look of them. Ours are aluminum clad wood (powder-coated aluminum on the outside, stain-grade clear pine on the inside). Made by Sun Windows. Both panels function. The hardware is top quality. I especially like the fully adjustable hinges. We have been very pleased now after about 5-6 years.

