Our high-quality Plastic U Shims are designed to deliver strength, precision, and reliability for a wide range of construction and glazing applications. Engineered to withstand up to ten tons of compressed force, these lightweight, U-shaped shims fit securely around bolts and anchors, making them ideal for precise alignment needs.

Perfect for use in window installation, curtain walls, precast panels, tilt-up construction, and the glass industry, these shims feature a rounded design that eliminates protruding corners for easier, more accurate placement.

Key Features & Benefits

• Withstands up to ten tons of compressed force
• Designed to fit around bolts and anchors for secure placement
• Rounded edges provide greater flexibility and prevent snagging
• Available in eight sizes and four color-coded thicknesses
• Manufactured in the USA from high-quality plastic
• Made from Polypropylene (PP), High-Impact Polystyrene (HIPS), and ABS
• Resists rot and rust, unlike wood or metal shims
• Ideal for the Precast, Tilt-Up, and Glass industries
• Ships fast with prompt, personalized attention to every order

Available Sizes

We offer multiple thicknesses to meet your project needs: 1/16", 1/8", 1/4", 3/8", and 1/2".

Whether you need precision alignment for windows, curtain walls, or structural panels, our Plastic U Shims provide a durable, American-made solution you can trust.