You will need special tools like a professional cutting saw to shorten slats – we do not recommend doing this, even if you have required equipment. There are many aspects of bamboo blinds that need to be considered. We are happy to help you if you need to shorten the blinds – contact us for more details. The important thing is to measure and put right dimension (height and width) into configurator. That will prevent any problem with size of the ordered blinds.