Efficient internal communication is crucial for any organization, making the choice of interoffice and routing envelopes more important than it seems. The right envelopes ensure documents are securely routed and easily tracked, streamlining operations, reducing waste, and maintaining a professional appearance in daily workflow.
- BUILT FOR DAILY OFFICE ROUTING: Designed for interdepartmental use, these envelopes keep documents organized and protected as they move through busy offices, mailrooms, schools, and government buildings
- DURABLE 28 LB KRAFT PAPER: Heavyweight brown kraft stock resists wear and tear, making these envelopes strong enough for frequent handling and long-term reuse
- SECURE STRING & BUTTON CLOSURE: Classic string-and-button design keeps contents safely contained while remaining easy to open and close for repeated access throughout the day
- TRACKING-FRIENDLY DESIGN: Five narrow-ruled columns on each side provide plenty of space for signatures, dates, and routing notes to maintain accountability
- QUICK CONTENT VISIBILITY: Punched holes on both sides allow instant visual confirmation of contents without opening the envelope, saving time while protecting documents
- SECURE STRING TIE CLOSURE | Designed for reliable internal delivery, these inter office envelopes with string feature a durable string tie enclosure that keeps documents protected and prevents contents from slipping out during circulation.
- GENEROUS 10X13 INCH CAPACITY | These interoffice envelopes with string 10x13 easily accommodate full-size documents, folders, and multi-page packets, making them ideal 10x13 clasp envelopes for busy offices and departments.
- PREMIUM 100GSM PAPER STOCK | Crafted from sturdy 100gsm paper, these interoffice envelopes offer superior durability over standard options, standing up to frequent handling, routing, and long-term reuse.
- SMARTLY DESIGNED FOR DAILY USE | Thoughtful printing and precise hole punching maximize usable writing space on routing lines, making it easy to track departments, dates, and approvals without clutter.
- BULK VALUE FOR HIGH-VOLUME OFFICES | This convenient pack of 100 string tie envelopes ensures your team stays stocked for ongoing interdepartmental communication, saving time and reducing reordering hassles.
- Blue Summit Button and String Envelopes are durably constructed and designed for re-use, crafted with heavyweight 28lb. manila stock paper making these envelopes a great choice for inter-office mailings
- These Interdepartmental Envelopes have a string and button closure and can store documents up to 10" wide by 13" long
- Pre-printed lines alloe users to sign their name and department of origin or receipt
- Space is maximaized with five columns and narrow ruling on these 10x13 office envelopes
- These envelopes easily support inter department routing with hole punches for viewing documents without needing to open the envelope
- 10 inch x 13 inch/opaque charcoal gray
- Hook and loop closure
- Top Loading/1-1/6 inch gusset
- With letter size outside pocket andpreprinted interoffice routing slip included
- 6ea/pack
- Our inter office envelopes with string 9x12 have hole punches on both sides allow recipient and sender to verify contents for your internal mail.
- Easy route envelopes within office - our intercompany envelopes easily support routing inter department mail with pre-printed lines to add name and department for recipient
- Our interoffice mail envelopes offer convenient string-and-button closure for easy access
- Maximized space with 5 columns and narrow ruling on with our inner office envelope 9 x 12
- Ideal for efficient correspondence between departments.
- String and button closure keeps contents secure. Reusable.
- Made of durable 28-lb kraft material for long-lasting use.
- Greener choice - contains 20% post consumer recycled content.
- Contains Recycled Content - See Specs for Details.
- Convenient Bulk Set: includes 25 pcs 10''x13" interoffice envelopes and 25 pcs 9''x12" clasp envelopes, ideal for daily office use; It provides 1-3 months of internal document transfer for small to medium teams, boosting workflow efficiency; The large...
- Reusability and Cost Effectiveness: these 50 interoffice envelopes made from thick brown kraft paper, the strong, environmental friendly construction ensures that these envelopes can be opened and closed dozens of times, reducing long term office costs...
- Secure String Tie Closure: each envelope features a traditional string and hole closure system, which keeps documents securely sealed, the design prevents accidental opening, making these brown envelopes ideal for transmitting sensitive materials while...
- Clear Labeling for Easy Organization: with preprinted fields for date, sender, and recipient details, these brown envelopes help streamline document sorting and tracking, this makes internal deliveries more organized and reduces errors in...
- Versatile and Practical for Office Use: these interoffice envelopes with string tie are perfect for transporting large files or assets between departments or buildings, the versatile design makes them suitable for a range of office tasks, from everyday...
- Two-Sided Five-Column Format
- Convenient String-And-Button Closure For Easy Access
- Envelopes Have Button-And-String Tie Closure That Adds To Their Professional Looks
- Simple High-Quality Inter-office Envelopes That Get The Job Done
- Red - 10" x 13" - 5 Envelopes
- DURABLE: Made from heavyweight 28 lb. Blue stock
- VISUAL CONFIRMATION: Holes punched on both sides of the envelope allow for visual confirmation of the contents without opening
- MAXIMIZE: 5 Columns on each side with narrow ruling allows for maximum space for signatures
- STRING-AND-BUTTON: Convenient when reusing the envelope, easy to open and close repeatedly
- GREAT VALUE: Conveniently packed in 100 count to reduce the frequency of repurchasing
This article is part of our complete guide Office & School — browse all our comparisons and buying guides.
Last update on 2026-07-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Interoffice & Routing Envelopes
Material and Durability
The longevity of an interoffice envelope largely depends on its material. Standard options often include sturdy kraft paper, typically ranging from 24 lb to 32 lb in weight. Heavier paper stock provides greater tear resistance and stands up better to repeated handling and routing through various departments. Consider envelopes with reinforced seams or gusseted sides if you frequently send bulky documents or items, as these features significantly extend their lifespan and prevent premature wear.
Closure Type and Security
Different closure mechanisms offer varying levels of security and reusability. Self-seal envelopes provide quick and easy closure, often preferred for single-use or less sensitive documents. Gummed closures require moistening but offer a more secure, tamper-evident seal, which can be important for confidential materials. For maximum reusability and a distinct look, string-and-button closures are excellent. These durable closures allow envelopes to be opened and resealed many times without compromising the envelope's integrity.
Size, Capacity, and Visibility
Selecting the correct size is essential to accommodate your documents without excessive folding or wasted space. Common sizes include standard letter-size (9" x 12") for basic documents, while larger or gusseted envelopes are available for bulkier reports, catalogs, or multiple files. Ensure the envelope provides ample space for clear routing information. Many envelopes feature pre-printed routing forms with multiple lines for sender, recipient, and date, which enhances visibility and helps prevent misdirection.
Routing Features and Organization
Effective interoffice envelopes are designed for clear, repeatable routing. Look for envelopes with pre-printed routing grids that offer numerous entry lines, allowing for many uses before the envelope needs replacement. The layout should be intuitive and easy to read, with designated spaces for department names, dates, and signatures. Some envelopes also incorporate clear windows or distinct color coding, which can further aid in quick identification and sorting within busy office environments, improving overall organizational efficiency.
