Endurance composite doors offer unrivalled security and available in Wales from MPN Local Recommended Preferred installation compny. Create your ideal door with our Door Designer. Free online composite door prices. Wondering how much you’ll pay for composite doors prices fitted in your house and home making it so much more secure to live in. Endurance front doors are solid and secure and offer great value for money. From standard hinged door, they even offer ‘stable doors’ and ‘double doors’.