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Stackable Shim Packs

Price range: $7.00 through $80.00
  • Glazelock GLZ17 Stackable Shims in convenient smaller pack sizes. Peel apart the heat-welded 1/16" plastic shim layers to achieve the thickness you need, then snap off the breakaway sections to adjust the length. Ideal for window and door installation, cabinetry, countertops, and general leveling and spacing.
  • Details

    GLZ17 STACKABLE SHIMS IN SMALLER PACK SIZES

    Glazelock Stackable Shim Packs contain the same GLZ17 Short Stackable Shims available in our full-case Stackable Shims product, packaged in smaller quantities for installers, maintenance professionals, contractors, and DIY users who don’t need a full box.

    Each stack contains 16 individual 1/16″ plastic shims heat-welded together into a 1″ stack. Simply peel apart the stack to achieve the thickness required for the application. Breakaway sections also allow the shim length to be shortened when needed.

    The GLZ17 measures 1-7/8″ wide × 3-1/2″ long, with a 4-1/2″ overall length including the breakaway thumb-tab section. Made from durable high-impact polystyrene (HIPS), these shims will not rot, shrink, or swell like wood.

    Stackable Shim Packs are useful for window and door installation, cabinetry, countertops, plumbing, tile, equipment leveling, and general construction and maintenance work.

    Need larger quantities? The GLZ17 is also available in a full box of 960 shims on our main Stackable Shims product page.

  • Specifications

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  • Shipping

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What our customers say.

  • 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?


  • Invented by a window installer.

  • Easier placement.

  • Reduces material and labor costs.

  • Secure and Stable.

  • Simplifies installation in a multitude of applications.

  • Proudly made in the USA.

  • 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.