CRL 1/16 in x 3-1/2 in Shimstack Shims - Case of 1000

Our review of the CRL 1/16 in x 3-1/2 in Shimstack Shims finds them to be a practical, high-capacity solution for professional installers who need precise spacing and repeatable results. The single biggest reason to buy is the snap-apart design: sixteen consistent 1/16 in layers let users dial in thickness quickly without trimming, and the installation tab speeds insertion into tight gaps. Built from high-impact, fire-resistant plastic rated for heavy compressive loads, these shimstacks suit demanding glazing and construction tasks where durability and accuracy matter.

Key Features

• Snap-apart layers: Sixteen uniform 1/16 in layers provide repeatable increments so installers can achieve exact thickness without measuring each piece.
• High compressive strength: Designed to withstand compressive loads up to 5000 psi, offering dependable support in heavy-duty applications.
• Fire-resistant plastic: Manufactured from high-impact, fire-resistant material that holds up in construction and glazing environments.
• Installation tab: Built-in tab makes insertion easier in narrow or recessed openings, saving time on repetitive installs.
• Bulk case quantity: Supplied as a case of 1000 for contractors or shops that need a large, consistent inventory of shims.

Who It's For

These shimstacks are aimed at professional glaziers, door and window installers, and contractors who require consistent, field-adjustable shimming for curtain walls, storefronts, and other precision assemblies. The case quantity and robust compressive rating suit jobsite use and repeatable installation workflows.

DIYers with occasional small projects may find the bulk case more than needed and could prefer smaller pack sizes. Also, projects that require nonplastic or metal shim material for chemical compatibility should consider alternative shim stock.

Pros & Cons

Pros

• Snap-apart design offers precise thickness control without cutting or trimming.
• High-impact, fire-resistant plastic provides durability and safety in construction settings.
• Installation tab speeds placement and helps align shims in tight gaps.
• Case of 1000 keeps job sites stocked to avoid frequent reordering.

Cons

• Case quantity may be excessive for homeowners or light users who do not need 1000 pieces.
• Plastic material may not be appropriate where metal shimstock is required for specific structural or chemical conditions.

Specifications

Brand	CRL
Layer thickness	1/16 in per layer
Length	3-1/2 in
Layers per shimstack	16 layers
Compressive strength	Up to 5000 psi
Material	High-impact, fire-resistant plastic
Quantity	Case of 1000

Our Verdict

The CRL shimstacks are a solid choice for professionals who value quick thickness adjustment, consistent increments, and a durable, fire-resistant plastic rated for heavy compressive loads. They represent good value for contractors and glazing shops that use shims frequently, though homeowners with occasional needs may prefer smaller packs.

Frequently Asked Questions

Can each layer be removed for precise thickness?
Yes, each of the sixteen 1/16 in layers snaps off cleanly so you can build the exact thickness required.

Are these shims suitable for heavy loads?
Yes, the material is rated to resist compressive loads up to 5000 psi, appropriate for many glazing and construction applications.

Is the material fire-resistant?
Yes, the shims are molded from high-impact, fire-resistant plastic suitable for building applications where that property is required.