Thank you for your review of JELD-WEN and for bringing this to our attention. We’re sorry to hear your expectations were not met and assure you we take your concerns seriously. The recommended installation instructions for our v2500 vinyl double hung window are located on our website at the following address if you are interested in how we suggest holding the window in place: https://alfresco-docs-prod.s3.us-east-2.amazonaws.com/17/JII001%200318.pdf . We are always looking for opportunities to improve and will send it to the proper department for further review and appropriate action. Once again, we sincerely appreciate the time you’ve taken to provide this feedback.