Add quality and functionality to your garage, side, or front entry with this six panel fiberglass door from Mastercraft®. With its energy-saving core and fiberglass construction, this door is a smart choice to save you money on the heating bill and maintain the beauty in your home. This beautiful, ready-to-install prehung door has a left inswing, which means the knob is on the left side of the door when you're pulling it toward you.