Door frame width Size options: The size of the screen door is the width of the inner diameter of the door opening plus 8-10cm, and the height plus more than 6cm. It is recommended to first measure the width of the inner diameter of the door opening and the width of the door frame to calculate the screen door size. Kind tips: The door curtain sizes we show are all width x height. The door curtain size corresponds to the door frame size. There will be a 2% error in the finished screen door. Because it is cut by hand, this is normal Please be sure to make sure the size is large when choosing the size. Don’t be too small, remember Door opening width Door frame height Door opening height Dear, if you have measured the size of the door opening, please be sure to add 8cm to the width and 6cm to the height when purchasing the door curtain size. Example: The size of the door opening is 80 in width and 205 in height, so the size to be purchased is 90*210. The size of the door opening is 90 in width and 207 in height, so the size to be purchased is 100*210.