Door-Stop International Are Composite Door Manufacturers of the highest quality and available in Port Talbot SA12 and SA13 from Port Talbot based MPN Windows and doors, get a quote online with our shop store and showrooms or call and make an appointment for a luxury front/back/side entry door for your NPT house and home. Get a free quote call/tect us for Door-Stop doors or if your preference is a free cal you need to phone freephone 0800 158 8800.