Due to the fact that our frames are built to order and per each customers specific needs All sales are final and we are not able to issue a refund once an order has been placed. Also due to people cutting the materials, drilling holes into the plastic and high shipping rates we will not pay for nor accept returns, as we will not be able to ship a used and/or cut up item with missing pieces to another customer. We will however be happy to ship a replacement for any item that arrives damaged or is missing. All shipments must be inspected prior to the delivery truck leaving and any missing or damaged items must be noted at that time and signed off by delivery driver as such. Any items not noted as such upon arrival will not be replaced. We are happy to provide you with customer support 8-5 Monday-Friday central time. If you have any questions while building your greenhouse, please feel free to call and let our build crew help you with any building tips. We want to make this a great experience and give you the strongest and longest lasting Greenhouse in America at the lowest possible price.