Aluminum is not recommended in beach homes for while the material is water resistant, it can suffer corrosion from salt water and salt air. The corrosion affects hardware operation and frame performance. The narrowness of the frame places the focus on the glass and subsequently, the view it offers. Multi-panel door systems are often made with aluminum frames to facilitate indoor/outdoor living. Milgard aluminum frames are available in anodized or baked-on finishes for long lasting color.