Introducing the DAJING Sash Jammers - the ultimate solution for enhancing security on your uPVC doors and windows. These innovative sash jammers for uPVC doors are designed to provide an extra layer of protection, giving you peace of mind knowing that your home is secure against potential intruders or accidental openings. Crafted from high-quality materials, our sash jammers boast excellent build quality, built to withstand wear and tear, ensuring long-lasting performance. They are easy to fit and operate, used on both uPVC windows and doors for extra security. The pack includes 3 different sized button spacers and packers to ensure a stylish fit onto different profiles, making them suitable for a variety of settings. Additionally, uPVC screws are provided for use with reinforced windows, guaranteeing a secure installation. Follow our fitting advice for a seamless setup: 1) Locate the Sash Jammer onto the section, ensuring the window can still open & close without contact with thn