Truedor GRP Composite Doors are stronger, more secure and longer lasting that PVC or Tiimber doors. 5-Point Locking, Triple Dog Bolts fitted to the Hinge side and solid GRP skin that even police battering rams cannot open. Fully fitted, old door removed and disposed of and a 10 Year Manufacture and Installation Guarantee from Cardiff's premier Home Improvement Specialists - Principality Installations. www.principalityinstallations.co.uk. Design your door on our website and receive a no obligation quotation within 24.