Glazelock® Window & Door Installation Shims | Multiple Colors & Thicknesses

Three rectangular glazelock shims in multiple colors and thicknesses made of plastic for window and door installation

Various glazelock shims including plastic flat plate, u-shaped, wedge-lock, and pre-scored wood shims in multiple colors

Black plastic glazelock shims with textured ribbed surface for secure window and door installation use

Glazelock shims flat plate plastic shims in blue red and black interlocking stackable for window and door installation

Red rectangular plastic shim with made in usa label and american flag emblem from glazelock shims collection

Olive green plastic glazelock shims rectangular flat plate with rounded corners and made in usa sticker for window and door installation

$103.60

Shipping calculated at checkout.

Size —

1/4" 300pc (25 x12)

1/8" 600pc (50x12)

1/16" 480pc (40x12)

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Backordered, shipping soon

Made in USA

Glazelock® Window & Door Installation Shims — Professional Plastic Leveling | Made in USA

Glazelock® Window and Door Installation Shims were invented by a window installer who understood the need for reliable, easy-to-use shims that simplify installation while ensuring professional results. Available in multiple colors and thicknesses, these rectangular plastic shims provide essential leveling and support for windows, doors, cabinets, and general construction. Made in USA since 1997.

Key Specifications

Shape: Rectangular flat plate
Colors: Multiple — for easy thickness identification
Thicknesses: Assorted range for precise leveling
Material: Durable plastic
Origin: Made in USA since 1997
Designed By: Professional window installer

Key Benefits

Installer-Designed — Created by a professional window installer for real-world performance
Multiple Colors — Color-coded thicknesses for fast identification and organization
Assorted Thicknesses — Complete range for precise leveling in any application
Durable Plastic — Won’t rot, rust, or compress like wood shims
Made in USA — Consistent quality since 1997

Perfect For

Residential and commercial window installation
Interior and exterior door installation
Cabinet leveling and alignment
General construction leveling and spacing
Professional contractors and DIY home improvement

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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 colors and thicknesses are available? +

Glazelock window and door installation shims are available in multiple colors and thicknesses for precise leveling control across a wide range of professional and DIY applications.

Are these shims color-coded? +

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

Glazelock® Window & Door Installation Flat Plate Shims — Multiple Colors & Thicknesses

Glazelock® Window & Door Installation Shims — Professional Plastic Leveling | Made in USA

Key Specifications

Key Benefits

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Glazelock® Window & Door Installation Flat Plate Shims — Multiple Colors & Thicknesses

Glazelock® Window & Door Installation Shims — Professional Plastic Leveling | Made in USA

Key Specifications

Key Benefits

Perfect For

14-Day Returns

Secure Checkout

Hear it from them

Customer Reviews

FAQs

Let customers speak for us