100lb cardstock hits the sweet spot in the paper weight spectrum. It's substantial enough to communicate quality in the hand, with none of the flimsy feel that comes with standard office paper, yet flexible enough to run reliably through digital presses and most commercial laser printers without the feed issues that heavier board stock can cause.
At Printing Supplies Direct, we stock the Omnilux Cover 100lb range in three sheet sizes: 17x11, 18x12, and 19x13, available by the ream or case. Produced in the USA, it's a consistent performer across the commercial print applications print shops run most often: business cards, presentation covers, postcards, direct mail, brochures, invitations, menus, and greeting cards.
Browse the products above or explore the full papers and printing media range to see the complete selection.
What Is 100lb Cardstock?
The term "100lb cover" refers to a paper weight measured under the cover stock grading system, where a ream of the parent sheet size weighs 100 pounds.
In practical terms, it produces a sheet approximately 0.35 mm thick, noticeably heavier than standard office or copy paper, but not so rigid that it becomes difficult to handle, fold, or feed through a press. That balance is the reason it appears so consistently across commercial print applications: it delivers a premium feel without creating handling or compatibility issues.
100lb Cardstock vs. 100lb Text Paper
Although both carry the same nominal weight, they are graded using different standards and are not interchangeable. Cover stock, which is what cardstock refers to, is measurably thicker and stiffer than text-weight paper at the same stated weight. A sheet of 100lb cover feels closer to light board; a sheet of 100lb text paper feels closer to heavy copy paper.
Important: If a job requires actual thickness and rigidity, cover stock is the correct specification. The two are not interchangeable in practice, even when the number looks the same.
Understanding Paper Weight and Thickness
Paper weight terminology can be confusing, particularly because the numbers don't always reflect how thick or heavy a sheet actually feels. A sheet of 80lb text paper, for example, is thinner and lighter than a 65lb cover sheet, even though the text weight number is higher.
This is because paper weight is determined by the weight of a ream (500 sheets) in the stock's basic uncut size, and different stock types (text, cover, bond) each use a different base size for that calculation. The result is that comparing weights across categories requires knowing which standard applies.
When selecting paper for a project, always follow the stock type (cover, text, bond) and its basis weight together. Higher numbers indicate a thicker, heavier sheet but only within the same stock category.
What 100lb Cardstock Is Used For
100lb cover stock is the go-to weight for any printed piece that needs to feel professional and hold up under handling. It's thick enough to communicate quality, light enough to run reliably on most commercial digital presses.
Business cards benefit from its firm, crisp hand feel in a way that lighter stocks simply don't deliver. Postcards and direct mail hold their shape through handling and mailing without picking up creases, while brochures and presentation covers gain enough rigidity for clean, sharp folds.
For menus and branded materials that are handled repeatedly, the stock resists corner softening and stands up to minor moisture exposure. It also works well for invitations and greeting cards, where a substantial feel matters but the sheet still needs to be workable.
Folding tip: Score before folding on any folded project. Brochures, cards, and covers all benefit from a clean scored crease to prevent cracking.
Why Matte Cover Finishes Work Well at This Weight
Matte surface coating does more than affect appearance. It eliminates glare under direct or overhead lighting, keeping text legible without the reader needing to reposition the piece. It also accepts pen and marker cleanly, which matters for anything that gets signed, annotated, or filled in.
For print shops producing letterheads, branded covers, and client-facing documents, matte 100lb cover is a reliable choice across job types.
Running lighter uncoated document work alongside? Accent Opaque is worth a look: bright, smooth, and well-suited to laser presses where a clean no-gloss result is the goal.
Heavyweight Cardstock Options
When a project calls for extra durability and a premium feel, heavyweight cardstock is the material of choice. The Omnilux Cover range is available at 100lb cover weight, and for projects that demand even more rigidity, heavier options such as 110lb and 130lb are worth considering.
The added thickness of heavyweight cardstock enhances the tactile quality of printed materials and improves their longevity under repeated handling. When selecting a weight, consider the specific demands of the job: the sheet's rigidity determines how well it holds up as a card, cover, or packaging insert.
Choosing the Right Weight for Your Job
How 100lb Compares to Other Weights
Cardstock weight selection comes down to the physical properties a job requires and the equipment it will run on.
Our 65lb cover stock is lighter and more flexible, well-suited to high-volume flyer and insert jobs where throughput and cost efficiency take priority. 100lb cover is noticeably thicker and stiffer, the correct choice for anything client-facing or premium. One important distinction: 100lb cover is not the same as 100lb text stock: cover is significantly thicker at the same stated weight.
Above 100lb, options in the 120lb-plus range move toward board territory, suited to packaging and specialty applications, but require more careful press setup and are not compatible with all digital equipment.
For most commercial print applications, 100lb cover sits at the practical sweet spot: heavy enough to feel intentional, light enough to run without issue.
Printer Compatibility and Running Tips
Most commercial digital presses and desktop laser printers handle 100lb cover stock without issue, particularly using a bypass tray or manual feed mode. The critical step is selecting the correct media type in the print driver: cardstock or heavy paper mode adjusts fuser temperature and paper path speed to suit the heavier stock. Running it on a standard paper setting is the most common cause of poor output.
Test a small batch before committing to a full run, as cover stock can vary slightly between manufacturers. For offset press applications, 100lb cover runs without issue on most sheet-fed equipment within standard makeready parameters.
Tips for Effective Cardstock Use
- Store cardstock flat and in its original packaging to prevent warping or curling, especially in environments with fluctuating humidity.
- When cutting to custom sizes, use a sharp blade or paper cutter to ensure clean, precise edges and avoid fraying.
- Score before folding on any folded project. Cards, brochures, and covers all benefit from a clean scored crease to prevent cracking.
- Always test a single sheet first when printing on an unfamiliar press to confirm settings and avoid wasted materials.
Ready to Order
All cases ship free at Printing Supplies Direct, and our team is available to help with any questions about stock selection or press compatibility.
Browse the 100lb cardstock products above, or explore the full range of papers and printing supplies to find the right stock for every job your shop runs.
