Fiberglass entry doors are composite panels made from glass fiber-reinforced polymers, typically with a foam core sandwiched between fiberglass skins. They are often reinforced with wood or composite frames and can be finished to mimic the look of various wood grains, from mahogany to fir, or in smooth, contemporary finishes

High-grade polyurethane or other foam core for insulation and structural integrity. Fiberglass skins for durability and weather resistance; some have woodgrain textures or smooth finishes