1/4" x 1-1/2" x 3 1/2" Clear Shims. Clear color hides shims. Economical to use for all your shimming and leveling needs. For use in the installation of windows, doors, storefronts and insulating glass units. High-impact plastic horseshoe shims are weather-proof and will not rot, rust, stain or leach. Color:Clear Thickness:1/4" Length:3-1/2" Width:1-7/16".