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Thank you for your feedback. We are pleased to hear that the window kits exceeded your expectations for noise reduction, and we appreciate your confidence in our company to help accomplish your goal. We do want to address some of your concerns. The website states that what is provided does not include screws. However, we send self-tapping sheet metal which covers the majority of situations to use as an anchor, if needed. The foam is essentially operating like weather stripping to seal the space between the metal angle and the window casing. Due to the fluctuation of construction materials, the foam helps create a good seal, which is why screws are used to hold the metal angle in place. Finally, the labeling of the top and bottom of the kits. We have never been informed of any issues with determining window orientation. However, we believe in the continuous improvement philosophy, so your request is being reviewed by management so we can improve on this product for our customers. We hope this covers everything you mentioned and if you need any further assistance, please reach out to your sales rep and they will be happy to help. Thank you again for your business.