Glazelock shims u-shaped horseshoe plastic shims in red blue and black with 3 inch by 2 5/16 inch size and 3/4 inch slot
Glazelock product-family chart showing U-shaped, interlocking, snap-off, flat-plate, tapered, Wedge-Lock, and pre-scored wood shims.
Glazelock graphic showing stacked blue, red, and black interlocking shims above a shim assortment and commercial building photo.
Glazelock application collage showing shims used for tile spacing, window and door installation, cabinetry, and countertop leveling.
Black Glazelock GLZ18/Econo18 U-shaped plastic shim dimension diagram labeled 3 inches long, 2-5/16 inches wide, and 1/4 inch thick.
Black u-shaped glazelock shims with matte finish and american flag sticker made in the usa for horseshoe use
Red u-shaped plastic glazelock shims with three circular indentations and made in usa label for horseshoe shims
Blue u-shaped plastic glazelock shims with 3 by 2 5/16 inch size and made in usa label

Glazelock® U-Shaped Horseshoe Shims, 3 x 2-5/16 In, 3/4-In Slot | Multiple Pack Sizes | Made in USA

A partner brand, sold by FLI Products

Made in USA

Regular price$133.43
$0.13/item
Shipping calculated at checkout.

Size
count
  • In stock, ready to ship
  • Backordered, shipping soon
  • 3/4-inch slot: Accommodates compatible pipes, bolts and anchor hardware.
  • Open horseshoe shape: Position the shim around hardware during spacing and leveling work.
  • 3 × 2-5/16-inch profile: A defined footprint for matching the shim to your installation.
  • Made in the USA: Durable plastic construction in multiple colors.

Dimensions and fit

Each U-shaped horseshoe shim measures 3 × 2-5/16 inches with a 3/4-inch slot. Check the required thickness and clearance around your hardware before ordering.

Where to use it

Use for compatible window and door installations, cabinet and countertop leveling, or plumbing and mechanical installations requiring spacing around hardware. Keep the appropriate size ready while aligning your project.

Material and colors

Durable plastic. Color options include Red, Blue, Black and other colors. Made in the USA.

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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 size is this shim? +
This Glazelock shim measures 3" x 2-5/16" — a horseshoe flat shim for precision leveling of windows, doors, and frames.
Are these shims color-coded? +
Yes. Glazelock shims are color-coded by thickness for easy identification during installation.

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