Ordering a large quantity of envelopes?
Email us for Volume Special Pricing
or
call us directly at 612-867-2121
Why Choose Envelopes by Size?
Finding the perfect fit is the first step toward a professional and cost-effective mailing strategy. Choosing envelopes by size allows you to optimize for USPS postage regulations, ensure document security, and present a polished image to your recipients. Whether you need a standard #10 Business envelope for correspondence, a 6x9 catalog mailer for brochures, or an oversized 12x15.5 for jumbo documents, our inventory is organized to help you find the exact dimensions required. By matching your contents to the correct envelope size, you prevent unnecessary shifting during transit, reduce the risk of damage, and avoid the "oversized" surcharges that come with using mailers that are too large for their contents.
Commercial Sizes
- #6 3/4: Common for personal checks and small invoices.
- #9: The standard "return" envelope that fits inside a #10.
- #10: The industry standard for letter-sized business mail.
- #11, #12, & #14: For thicker document stacks or specialized forms.
Flat & Catalog Sizes
- 6x9: Ideal for 5.5x8.5 booklets or half-folded letters.
- 9x12: The perfect fit for standard 8.5x11 sheets flat.
- 10x13: Great for thick catalogs or presentation folders.
- Jumbo (12x15+): For oversized prints, blueprints, and large manuscripts.
Pro Sizing Tips
The "Breathability" Factor
Always allow at least 1/4" to 1/2" of clearance around the perimeter of your document. If you are mailing a thick catalog, move up to a "Comfort Fit" size (like 9.5x12.5) to ensure the seams don't burst and the contents slide out easily.
Nesting Envelopes
If you are including a return envelope, use the one-size-down rule. A #9 return envelope is specifically designed to fit perfectly inside a #10 business envelope without folding.
Aspect Ratio & Postage
To qualify for standard USPS automation rates, your envelope must be rectangular. Square envelopes (or those with an aspect ratio outside 1.3 to 2.5) often incur "non-machinable" surcharges.
Frequently Asked Questions
What is the most common business envelope size?
The #10 envelope (4-1/8" x 9-1/2") is the standard for business correspondence. It fits a standard 8.5" x 11" sheet of paper folded into thirds.
Do you carry sizes for oversized or "Jumbo" mailings?
Yes, we stock a wide range of flat and expansion envelopes up to 12" x 15-1/2" and beyond. These are ideal for blueprints, artwork, and large presentation kits.
Can I get custom printing on any envelope size?
Absolutely! Easy Envelopes specializes in custom printing across all sizes. Whether it's a small #6 3/4 or a large 10x13, we can add your logo, return address, and branding to ensure your mail stands out.
