Envelope sleeve office products 310×420×40 mm, 100 pcs, white — office products

Paper envelope sleeves by office products measure 310×420×40 mm and come in a pack of 100 in white. These sleeves are designed to protect and transport A4 documents, brochures and thin folders while providing extra depth to accommodate bulked sheets. The full-wrap construction covers contents on three sides and leaves the opening edge for easy insertion and removal, offering lightweight disposable protection suitable for everyday office dispatch, filing and archive handling.

Advantages

The envelope sleeves are made from paper that balances protection and disposability, providing a clean white appearance for professional handling. The 40 mm gusset gives additional capacity compared with standard flat sleeves, allowing secure packaging of multiple documents or thicker materials without folding. Supplied in a bulk pack of 100, they facilitate organized mailing, internal document circulation and short-term storage while keeping contents visible and accessible.

Suitable for

• Mailing folders, brochures and A4 documents
• Internal office dispatch and interdepartmental transfers
• Archival sorting and short-term document storage
• Protecting paperwork during transportation or handling

Key specifications

• Material: paper
• Colour: white
• Outer dimensions: 310 × 420 × 40 mm
• Capacity: gusseted design for thicker document stacks
• Pack quantity: 100 pieces
• Construction: full-wrap sleeve with open edge for insertion

How to use

Insert documents or a folder into the sleeve through the open edge, aligning contents so they sit evenly within the 40 mm gusset. Fold or tuck a flap if present to reduce movement during transit, then label or attach shipping information as required. For mailing, place the sleeve inside a mailing envelope or parcel if additional protection is needed; for filing, store on shelves or in boxes with the open edge accessible for quick retrieval.

Usage recommendations

Use these paper sleeves for dry, clean documents and avoid exposure to moisture to maintain structural integrity. For long-term archival storage or protection of highly sensitive materials, consider using sleeves with moisture-resistant or archival-grade materials. When mailing heavy or bulky items, combine the sleeve with a rigid outer envelope or carton to prevent bending.