Hi John, thank you for contacting Firmoo. our frame comes with a fixed size. Also, we have different frame suppliers and they have different measuring methods, so we re-measure the frame size and upload it to the website. Therefore, you could rely on the measurement listed on the frame page. Choosing a perfect frame size online can be tough sometimes so we suggest that you could please check this link https://www.firmoo.com/help-p-1.shtml
for reference. I also tried to filer similar frames, please click here
. Moreover, thank you for your suggestion! We will consider it. Maybe we will have a smaller model in the near future. Please stay safe and healthy!