Office Products
Amazon Basics Clasp Kraft Envelopes for Documents, Gummed Mailing Envelope, 9" x 12", 100-Pack
Best for: secure document mailing and long-term storage
ASIN: B07X11WZRJ
•
Brand: Amazon Basics
These gummed mailing envelopes feature a double-prong metal clasp closure that secures documents firmly without requiring tape or glue. The thick 28-pound kraft paper provides reliable strength for filing, storing, or shipping items up to 9 by 12 inches. The moisture-activated adhesive on the flap creates a permanent seal once activated.
Key features
- Clasp envelope (100-pack) for filing, storing, or mailing documents
- Double-prong metal clasp closure and reinforced eyelet keep documents securely contained
- Moisture-activated gummed surface on flap creates a permanent seal
- Made with thick 28-pound kraft paper for reliable strength and protection
- Measures 9 by 12 inches each; backed by an Amazon Basics 1-year limited warranty
Pick a size, color, or pack quantity. The image and “View on Amazon” button below will update to match.
All 1 variants (with full names)
Price on Amazon
$12.95
Price as of Oct 20, 2026 9:12 PM UTC
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
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Frequently Asked Questions
What type of closure mechanism do these envelopes use?
These envelopes feature a double-prong metal clasp closure that secures to a reinforced eyelet, keeping documents safely contained. The flap also has a moisture-activated gummed surface for an additional permanent seal.
What material are these mailing envelopes made from?
They are constructed from thick 28-pound kraft paper, which provides reliable strength and protection for stored or mailed documents. The color is a standard kraft brown.
Are these envelopes suitable for international shipping?
The gummed flap creates a permanent seal that can help protect contents during transit. However, you should check the product listing on Amazon for exact specifications regarding international mailing regulations and durability requirements.
Does this package include any warranty coverage?
Yes, these envelopes are backed by an Amazon Basics 1-year limited warranty. This covers defects in materials or workmanship under normal use.
Specifications
| Model | AMZ37890 |
| Color | Kraft |
| Size | 9" x 12" |
| Pack size | 1 |
| Dimensions | 11.99999998776 inches × 8.99999999082 inches × 0.01181102361 inches (0.0350094072056 pounds) |
| UPC | 085227481016 |
| EAN | 0085227481016 |
| ASIN | B07X11WZRJ |
| Brand | Amazon Basics |
| Category | Office Products |
How often this price moves
We check this product on every sync and record whether the price went up, down, or held. Not how much: only which way.
This price has not moved once in 5 checks. Amazon has held it steady for the whole time we have been watching.
Fell (0)
Rose (0)
Held (5)
2026-10-16 → 2026-10-20How this is measured
Each bar is one sync, oldest on the left. Bars show direction only, never amount, and all are the same height for that reason: we record whether a price changed, not what it was. A move under 1% counts as held. We do not keep price history, by design. See our pricing data for the method.
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Last reviewed
October 20, 2026
Product listing details, features, and specs.
Editorial approach
Curated listings of Amazon Basics products with LLM-assisted summaries. Every specification, feature, and price is sourced from Amazon's Creators API — we don't invent reviews or ratings.
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As an Amazon Associate, I earn from qualifying purchases.
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