To measure for a replacement door, start by measuring the width and height of the existing door frame. Be sure to measure from the inside of the frame, including any trim or casing. Don’t forget to measure both horizontally and vertically in multiple places to ensure accuracy. If you’re unsure or need assistance, our expert team is here to help guide you through the process. With TWT Aluminium Windows & Doors, getting precise measurements for your replacement door has never been easier! So, call us now for exceptional door replacement services in Sydney today!