Glazelock® Interlocking U Shims 4" x 3" | Heavy-Duty 7/8" Slot

Three Glazelock shims in red, blue, black U shapes

Dark gray matte Glazelock shims U-shaped with cutouts

Red Glazelock interlocking U shims with circular indentations

Glazelock blue U shims with Made in USA label and indentations

Glazelock interlocking U shims in red, blue, black and more

Glazelock interlocking U shims red blue black stackable horseshoes

Glazelock interlocking U shims in black with ribbed wedge-lock surface

Glazelock interlocking U shims in red, blue, black

Dark gray Glazelock shims U-shaped weight plate with screw holes

Red Glazelock interlocking U shims with indentations and protrusion

Blue Glazelock shims U-shaped tool with Made in USA label

$34.58

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Made in USA

Glazelock® Interlocking U Shims — 4" x 3", 7/8" Slot | Made in USA

Glazelock® Interlocking U Shims combine heavy-duty 4" x 3" dimensions with innovative interlocking technology. The large 7/8" slot accommodates bigger pipes, bolts, and hardware, while the interlocking design locks stacked shims together to prevent shifting during installation. Available in red, blue, and black. Made in USA.

Key Specifications

Dimensions: 4" x 3"
Slot: 7/8"
Shape: Square U-shaped (horseshoe)
Design: Interlocking — shims lock together when stacked
Material: Heavy-duty plastic
Colors: Red, blue, black
Origin: Made in USA

Key Benefits

Interlocking Design — Shims lock together to prevent shifting during installation
Heavy-Duty 4" x 3" — Maximum load-bearing capacity for demanding applications
Large 7/8" Slot — Accommodates larger pipes, bolts, and anchor hardware
Color-Coded — Red, blue, black for easy thickness identification
Made in USA — Consistent quality since 1997

Perfect For

Heavy window and commercial door installation
Industrial machinery leveling
Structural and load-bearing applications
Multi-level stacking requiring secure connections
Commercial and industrial construction projects

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FAQs

What are Glazelock shims used for? +

Glazelock interlocking plastic shims are used for leveling and aligning windows, doors, frames, and other construction applications. Their interlocking design locks stacked shims together to prevent shifting during and after installation.

What makes Glazelock different from regular shims? +

Glazelock shims feature a patented interlocking design that locks stacked shims together so they won't shift or slide out of position — a common problem with standard plastic or wood shims.

Are Glazelock shims Made in USA? +

Yes. Glazelock shims have been Made in the USA since 1997.

What slot width does this Glazelock shim have? +

This 4" x 3" Glazelock shim features a 7/8" slot, accommodating larger pipes, bolts, and hardware than standard 1/2" slot shims.

Are Glazelock shims color-coded? +

Yes. Glazelock shims are color-coded by thickness (red, blue, black) for easy identification during installation, saving time on the job site.

Glazelock® Heavy-Duty Interlocking U Shims — 4" x 3" | 7/8" Slot

Glazelock® Interlocking U Shims — 4" x 3", 7/8" Slot | Made in USA

Key Specifications

Key Benefits

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Glazelock® Heavy-Duty Interlocking U Shims — 4" x 3" | 7/8" Slot

Glazelock® Interlocking U Shims — 4" x 3", 7/8" Slot | Made in USA

Key Specifications

Key Benefits

Perfect For

14-Day Returns

Secure Checkout

Hear it from them

Customer Reviews

FAQs

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