Find a variety of Glazelock shims here. These interlocking plastic shims are designed for precise leveling and alignment in a wide range of applications, from window and door installations to cabinetry and plumbing projects. The Glazelock interlocking shim design ensures a secure and stable fit, preventing slippage and maintaining consistent spacing, which is crucial for achieving professional-quality results and avoiding costly rework. We offer U-shaped and horseshoe plastic flat shims in multiple sizes to accommodate various project needs, offering flexibility for different gap widths and leveling requirements. Both square and horseshoe options are available, all crafted from durable plastic to resist moisture, rot, and wear, making them suitable for both indoor and outdoor use. Choose from our selection of plastic flat shims for reliable support and long-lasting performance in your projects. The interlocking feature provides superior stability compared to traditional shims, saving you time during installation and ensuring professional results that stand the test of time. These shims provide a consistent, reliable solution for achieving perfect alignment and level surfaces.