Drywall Shims Cardboard Wallet 45 in 100 Pcs - Level Baseboards & Butt

In this review the Seajan drywall shims wallet proves to be a simple, practical tool for installers and DIYers who need a large quantity of thin, consistent spacers. The bottom line: this pack of 100 cardboard shims is best for interior drywall and trim work where small, repeatable adjustments are required, and the single biggest reason to buy is the combination of a full 45 in length and thin 1/16 in thickness that matches drywall widths and stacks predictably for fine tuning.

Key Features

• Ample Quantity: The 100-piece pack reduces trips to the store and supplies enough shims for multiple rooms or projects without frequent replacement.
• Standard Length: At 45 in long each shim matches a drywall sheet width or half an 8 ft board, making it easy to span seams and edge joints without awkward trimming.
• Consistent Thickness: Each shim is approximately 1/16 in thick so small irregularities can be corrected precisely and shims can be stacked for larger gaps.
• Stud-Width Design: About 1-1/2 in wide, the shim aligns with common stud widths which reduces wasted material and simplifies placement behind studs or trim.
• Kraft Cardboard Construction: Made from kraft cardboard for a light but sturdy spacer that will not compact under pressure during installation.
• Versatile Use: Useful on floating butt joints, wall cabinets, baseboards and bullnose corner adaptors to improve inset and ensure better tape adhesion at seams.

Who It's For

These shims are aimed at drywall installers, carpenters, and dedicated DIYers who need a low-cost, disposable spacer for interior finishing tasks. The long 45 in length and stud-width feel make them especially handy for running continuous support at seams and behind trim where consistent thickness matters.

They are not intended for exterior use or for areas exposed to high humidity, so those working on outdoor frames, exterior window flanges, or wet environments should look for plastic or composite shims designed for moisture resistance.

Pros & Cons

Pros

• Large 100-piece quantity keeps a steady supply on job sites and for multiple projects.
• 45 in length and 1-1/2 in width match drywall geometry for fewer cuts and faster placement.
• Kraft cardboard is lightweight yet resists compression, maintaining shim thickness under pressure.

Cons

• Cardboard material is not suitable for high humidity areas or exterior installations and can degrade if wet.

Specifications

Brand	Seajan
Quantity	100 pieces
Length	45 in
Width	1-1/2 in
Thickness	1/16 in (approx)
Material	Kraft cardboard
Intended Use	Indoor drywall, butt joints, baseboards and trim

Our Verdict

For interior drywall finishing and trim work this 100-pack of 45 in cardboard shims offers clear value: the length and thin, stackable thickness reduce cutting and speed alignment, and the quantity suits jobsite use. Buyers should accept the material limits and avoid wet or exterior installations, but for indoor leveling and butt joints these shims are an economical, practical choice.

Frequently Asked Questions

Can these shims be stacked to correct larger gaps?
Yes, the 1/16 in thickness is intended to be stacked for greater spacing where needed.

Are these shims suitable for exterior doors and windows?
No, because they are cardboard they are not recommended for exterior openings or areas exposed to moisture.

Will the shims compress under pressure?
The kraft cardboard construction is light yet sturdy and resists compaction during normal interior installation pressures.