Enjoy Free Shipping on Orders Over $99 within the 48 Contiguous States!
Enjoy Free Shipping on Orders Over $99 within the 48 Contiguous States!






S-SHIM-116
Plastic structural shim stacks are U-shaped shims used to align windows, doors, curtain walls, storefront tubing, and other architectural components. A convenient installation tab makes insertion and adjustment easy, and a variety of shim sizes makes them a versatile home maintenance solution. Shims are adjustable in thickness by stacking, and in length by just snapping them apart for your desired shape.
Plastic shims for aligning windows, doors, and other parts of the home
Measures 3 ½” long, 1/16” thick, and 1 ⅞” wide with a ⅝” slot
Includes sixteen (16) plastic shims
For interior use only
Identify the area where the shims will be used.
Measure the width of the gap or distance that the surface needs to be adjusted.
Select a plastic shim that is slightly larger than the gap or adjustment measured in step 2.
Insert the shim into the gap or place it under the surface that needs adjusting.
Use a hammer to gently tap the shim into place until it's flush with the surrounding surfaces.
Break off any excess shims based on the depth of the gap.
Repeat all steps as needed until the gap is filled or the surface is level.
If necessary, use a caulking or sealant to seal the area around the shim and 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.
