Orders over $99 ship FREE within the 48 contiguous states.

Orders over $99 ship FREE within the 48 contiguous states.

Plastic Structural Shimstack - 16 Pack - Adjustable Plastic Shims - 1/16” Thickness with 5/8 “ Slot Width


About Plastic Shims - 1/16 inch thick - 16 pieces

  • Plastic Structural Shimstacks (or shims) are U-shaped shims with a convenient installation tab that makes insertion and adjustment easy
  • With so many available shim sizes, they can be used to align windows, doors, curtain walls, storefront tubing and other architectural components
  • Pack includes 16 plastic shims, which makes a total of a 1” stack of 1/16” thick shims
  • Each plastic shim is 1/16 inch thick, 3 1/2 inch long and 1 7/8 inch wide with a 5/8 inch slot in the middle
  • Shims are adjustable in thickness by stacking, and in length by just snapping them apart for your desired shape


How to use Plastic Shims

  1. Identify the area where the shims will be used.
  2. Measure the width of the gap or distance that the surface needs to be adjusted.
  3. Based on Step 2, select a plastic shim that is slightly larger than the gap or adjustment needed.
  4. Insert the shim into the gap or place it under the surface that needs adjusting.
  5. Use a hammer to gently tap the shim into place until it's flush with the surrounding surfaces.
  6. Break off any excess shims based on the depth of the gap.


Repeat the process as needed until the gap is filled or the surface is level.


If necessary, use a caulking or sealant to seal around the shim to prevent drafts or water infiltration.

Note: Plastic shims are suitable for interior use only, and should not be used in exterior or load-bearing applications.