Color Coded for Convenience Economical to Use Simplifies All Leveling Requirements CRL Plastic Horseshoe Shims are made to simplify leveling problems wherever they occur and have been approved by architects for use in the installation of windows, doors, curtain walls, storefronts and insulating glass units. They are adaptable for use in the appliance, automotive, aviation and mobile home industries as well. They help cut labor and material costs wherever used. Color: Black Thickness: 1/4 in (6.4 mm) Length: 3 in (76.2 mm) Width: 2-5/16 in (58.7 mm) Minimum Order: 1 Package (100 Pieces) Additional Product Information: CRL Horseshoe Shims are made of high impact styrene plastic, properly designed and balanced for vertical or horizontal use. Available in three thicknesses 1/16, 1/8 and 1/4 inch (1.6, 3.2 and 6.4 millimeter), and four lengths (2, 3, 3-1/2 and 4 inches (50.8, 76.2, 88.9 and 101.6 millimeter)). This size has a 7/8 inch (22.2 millimeter) space between the legs. The 3-1/2 inch (88.9 millimeter) length is extremely popular to install storefront aluminum, as most major storefront fabricators use four inch (101.6 millimeter) tubing. You will find these valuable aids in your building requirements.