Ensure your door and window frames are perfectly aligned with our plastic shims. These shims are specifically designed to support the weight of glass and aluminum frames, making them ideal for modern construction projects. To use, position the shims at points around the frame to achieve the desired level and support. This not only enhances the structural stability but also improves the overall aesthetic of the installation, providing a clean and professional finish. Features -Color:Multi -Material:Plastic -Size:6.00X4.00X1.10cm/2.36X1.57X0.43in -Size:6.00X4.00X0.50cm/2.36X1.57X0.20in -Size:6.00X4.00X1.50cm/2.36X1.57X0.59in -Size:6.00X4.00X0.30cm/2.36X1.57X0.12in -Heavyduty support: these shims are capable of supporting the weight of heavy doors and windows, ensuring that your installations remain secure and stable -Easy to install: with a design, these shims can be installed quickly and easily, making them for diy projects and home repairs -Highly : constructed from robust plastic, these shims are built to withstand the test of time, providing support -Multiple size selections: these shims are available in various sizes, making them suitable for a wide range of door and window dimensions -Comfort enhancement: by reducing vibrations and noise, these shims help to create comfortable living environment Package list: spacers