--- product_id: 291903649 title: "Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)" brand: "columbian" price: "€ 55.58" currency: EUR in_stock: true reviews_count: 9 category: "Columbian" url: https://www.desertcart.pt/products/291903649-columbian-9-x-12-security-envelopes-100-box-9-x store_origin: PT region: Portugal --- # Oversized 9 x 12 inch dimensions Tamper-evident SimplySafe seal Security tinted interior blocks visibility Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) **Brand:** columbian **Price:** € 55.58 **Availability:** ✅ In Stock ## Summary > 🔐 Seal your secrets with confidence—because your documents deserve VIP protection! ## Quick Answers - **What is this?** Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) by columbian - **How much does it cost?** € 55.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/291903649-columbian-9-x-12-security-envelopes-100-box-9-x) ## Best For - columbian enthusiasts ## Why This Product - Trusted columbian brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Ready:** 100 envelopes per box—perfect for busy managers and high-volume mailings - • **Effortless Sealing:** Release & Seal peel strip for a clean, no-moisture closure - • **Privacy Guaranteed:** Blue scrambled security tint keeps contents completely confidential - • **Professional Grade:** Heavyweight 28 lb white wove paper for durability and premium feel - • **Unmatched Security:** Patented SimplySafe pull strip reveals any tampering instantly ## Overview Columbian 9 x 12 Security Envelopes come in a convenient 100-pack, featuring patented SimplySafe tamper-evident pull strips and a security tinted interior to protect sensitive documents. The self-seal Release & Seal closure ensures a quick, sanitary seal without moisture. Crafted from durable 28 lb white wove paper, these envelopes are ideal for professional use, safeguarding confidential information with style and reliability. ## Description Columbian 9 x 12 SimplySafe Security Envelopes are ideal for mailing important documents or sending sensitive client information. Each security tinted envelope has a scrambled blue pattern printed on the interior that conceals the contents. The patented SimplySafe seal is constructed to show any signs of tampering. These mailing envelopes are still easy for the sender to close and the intended recipient to open. The Release & Seal strip peels right off so you can press to seal without any moisture. A pull strip makes opening the envelope straightforward and prevents you from tearing the documents inside. These self seal envelopes are inkjet printer compatible, though not recommended for a laser printer (use address labels instead). Stock up on 9" x 12" security envelopes for billing paperwork, tax documents, accounting records and more. Made from durable 28 lb paper. Overall envelope dimensions are 9 x 12 inches. White. Box of 100. Review: Perfect! - Super surprised at the quality of this envelope. Very secure and thick. Even my boss remarked on it! Great value! Review: Good price and no complaints - No complaints. I have a mail order company so I go through a lot of envelopes. Tried these out and they're pretty much what I expected -standard envelope quality that's no better or worse than any other. The self seal sticks well. Thought they were priced well and have no complaints. ## Features - Get a box of 100 Columbian 9 x 12 envelopes with SimplySafe tamper-evident pull strips and security tinted interiors for mailing sensitive oversized documents; easy peel off Release & Seal closure - Columbian 9 x 12 envelopes have a patented SimplySafe seal that will show signs of tampering, safeguarding against unauthorized opening - Security envelopes have a strong security tint pattern so you can't see what's inside; ideal for obscuring more sensitive information and protecting critical documents - These self seal envelopes have a Release & Seal peel strip; peel off the paper strip and press down for a permanent seal; it's simple, clean, and sanitary with no moisture required - Stock up on these catalog envelope 100 packs made from heavyweight 28 lb white wove paper ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08TRNHQWP | | Additional Features | Security Tint, Self-Adhesive Closure | | Best Sellers Rank | #4,749 in Office Products ( See Top 100 in Office Products ) #8 in Catalog Mailing Envelopes | | Brand Name | Columbian | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.7 4.7 out of 5 stars (997) | | Item Dimensions L x W | 7"L x 3"W | | Item Shape | Rectangular | | Manufacturer | TOPS Products | | Material Type | Paper | | Model Name | COLO930 | | Number of Items | 100 | | Occasion | Professional/Confidential | | Occasion Type | Professional/Confidential | | Recommended Uses For Product | Security | | Size | 9 x 12 | | Style | Self Sealing | | UPC | 026900093003 | | Unit Count | 100 Count | ## Product Details - **Brand:** Columbian - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Occasion:** Professional/Confidential ## Images ![Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - Image 1](https://m.media-amazon.com/images/I/61oXjE7xZKL.jpg) ![Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - Image 2](https://m.media-amazon.com/images/I/71mUJEBH3rL.jpg) ![Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - Image 3](https://m.media-amazon.com/images/I/71m6VtxX+1L.jpg) ![Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - Image 4](https://m.media-amazon.com/images/I/71xVo-E-0HL.jpg) ![Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - Image 5](https://m.media-amazon.com/images/I/71UU+4P7vNL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect! *by N***Y on December 23, 2025* Super surprised at the quality of this envelope. Very secure and thick. Even my boss remarked on it! Great value! ### ⭐⭐⭐⭐⭐ Good price and no complaints *by K***D on November 20, 2025* No complaints. I have a mail order company so I go through a lot of envelopes. Tried these out and they're pretty much what I expected -standard envelope quality that's no better or worse than any other. The self seal sticks well. Thought they were priced well and have no complaints. ### ⭐⭐⭐⭐⭐ Good product *by V***N on December 21, 2025* It is good product. thanks ## Frequently Bought Together - Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930) - 40#10 Security Tinted Self-Seal Envelopes - No Window, EnveGuard, Size 4-1/8 X 9-1/2 Inches - White - 24 LB - 40 Count (34140) - Amazon Basics 1/3-Cut Tab, Assorted Positions File Folders, Letter Size, Manila - Pack of 100 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/291903649-columbian-9-x-12-security-envelopes-100-box-9-x](https://www.desertcart.pt/products/291903649-columbian-9-x-12-security-envelopes-100-box-9-x) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*