3″ x 4″ Horseshoe Shims
Large-format traditional horseshoe shims for leveling, spacing, and alignment. The 3" × 4" U-shaped design provides a broad bearing surface and accommodates bolts, anchors, and fasteners up to 7/8", while the familiar non-interlocking design is ideal for installers who prefer a traditional horseshoe shim.
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Details
3″ × 4″ TRADITIONAL HORSESHOE SHIMS
Glazelock 3″ × 4″ Traditional Horseshoe Shims provide a large, stable footprint for leveling, spacing and alignment in window and door installation, glazing, storefronts, and other construction applications.
The U-shaped profile accommodates bolts, anchors, and other fasteners up to 7/8″, allowing the shim to be positioned around installed hardware without removing the fastener. Multiple shims can be stacked to achieve the required spacing, while the broad 3″ × 4″ footprint provides additional bearing area where a larger shim is preferred.
Made from durable high-impact polystyrene, these plastic shims will not rot, shrink, or swell like wood. Their smooth, non-interlocking design provides the familiar horseshoe-shim configuration preferred by installers who use traditional shims.
For applications where keeping stacked shims connected during installation is useful, Glazelock also offers 3″ × 4″ Interlocking Horseshoe Shims, which snap together without tape or glue.
Glazelock Shims are made in the USA.
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Specifications
Select an option to view specifications.
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Shipping
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What our customers say.
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We have been using Glazelock’s Interlocking shims for over 5 years now. They simply snap together to get our desired thickness. No more taping or glue shims together, saving us time and money.
– Roger, Starline Architectural Windows Ltd. -
We at Softer Lite Window Company use the Wedgelock Shim and are pleased with this great product. My installers find it more efficient and cost-effective, and an easier and faster way to get the job done right-the first time. We recommend the Wedgelock Shim and all of the Glazelock products.
-Mark Kane, President, Softer Lite Window Company -
Glazelock is our go to company for all our shim needs. We’ve never had any problems with the product received. The customer service provided goes beyond expectations-we can see our product ordered as soon as the next business day.
-Lindsey Holmes, B&D Contractors, Inc. -
I like using Glazeock’s Stackable Shims because they have the ability to stack well and make the right size shims for the job.
-Jared, EGR Inc.
Why use Glazelock Shims?
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Invented by a window installer.
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Easier placement.
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Reduces material and labor costs.
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Secure and Stable.
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Simplifies installation in a multitude of applications.
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Proudly made in the USA.
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Multiple sizes and variations available.
Shipping Info
All In-stock orders received by 2pm CST are shipped same day. Products shipped by UPS and/or Common Carrier We will ship Ground/Best way.
If you need an order expedited please give us a call and we can quote you for Next Day Air and Second Day.




