The Masonite Performance Door System was designed to do what doors are meant to do - keep the outside out and the inside in - but do it better than any before. This fibreglass door system is 64% better at keeping air and water out than the leading competitor, so your home can be comfy and cozy no matter what it's like outside. How do we do it? A seal that's superior, featuring a square edge door, self-adjusting sill, adaptive weatherstripping and enhanced corner pads. It's available with all Masonite exterior fibreglass doors, so you can choose the door design, color and glass that fits your style. So, protect yourself from the elements and keep your home feeling just right with a weather-resistant, energy-efficient door system backed by a 10-year limited full replacement warranty.