Plastic Flat Shims for Leveling 4" L x 2" W (1/16” Thickness – Blue – 480 Pieces) Rectangular Wedges to Level Doors, Toilet Shims, Windows, Cabinets – Indoor Outdoor Use - Made in USA

Introducing the plastic composite flat shims by Glazelock! Industry standard alignment and leveling of doors, windows, stairs, cabinets, counters, sheetrock, drywall, furniture, machinery, plumbing for DIY’rs and professionals alike! Made of High Impact Polystyrene plastic, these shim spacers can also be used as tile spacers and won’t rot, shrink or swell. The flat design allows the shim to fit in tight spaces, making install more streamlined. Glazelock’s high density plastic shim quality and durability are trusted by professionals across several industries. Check out our larger 1,000-piece quantity options! Width options include: 1/4-inch (black), 1/8-inch (red), and 1/16-inch (blue). These high impact polystyrene (HIPS) frame shims are made in Kankakee, IL, USA!

• BULK FLAT SHIM SET: This bulk case pack of 1/16” high-impact polystyrene plastic composite flat shims designed for leveling, spacing, aligning, and gap filling during installation, assembly, repair, and maintenance projects. Designed to help create precise adjustments and stable support for a wide range of household and professional applications.
• PRECISION FIT & RELIABLE SUPPORT: Glazelock flat shims are precision manufactured with smooth, burr-free edges for a secure and accurate fit against contact surfaces. Designed to help reduce gaps, movement, water intrusion, and air leaks while providing stable, dependable support for installation, leveling, and maintenance applications.
• PLASTIC SHIM WIDTH OPTIONS: These high impact polystyrene (HIPS) flat plastic shim spacers are available in multiple thickness options. Easy-to-recognize color coding — black (1/4"), red (1/8"), and blue (1/16"). The bright color system allows for fast thickness selection and organization on the job site, helping improve accuracy, reduce guesswork, and increase efficiency during installation and leveling project.
• INDOOR & OUTDOOR DURABILITY: Glazelock heavy-duty plastic shims are built to resist rot, cracking, warping, swelling, and splitting in wet, hot, or cold environments. Trusted by contractors and DIYers alike for leveling and aligning toilets, cabinets, doors, countertops, furniture, joists, drywall, appliances, and more across a wide range of indoor and outdoor projects.
• MADE IN USA: Based in Kankakee, IL, USA, Glazelock designs and manufactures wood and high impact composite plastic shims for both professional installers and the do-it-yourselfer’s!