All designs & quotations are final once agreed upon. Any requested changes to an order during design/manufacturing or after completion may incur additional costs. Transit Pak values its customer service over all else and we endeavor to provide the best service possible, but please make sure all involved parties are satisfied with a design before providing a purchase order or instructions (whether verbal or written) to undertake a given job. Unless specific instructions are received to the contrary, Transit Pak will construct a product as per our standard specifications and/or as we see fit to suit the relevant application/budget. Payment terms are COD unless prior arrangements have been made with Transit Pak.