Envelope with expansion BONG 200-12999 250×353×20 mm 120 g/m² white

BONG envelope with expansion (model 200-12999) is a white paper envelope sized 250×353×20 mm, manufactured from 120 g/m² paper. The envelope features a gusseted side that increases internal capacity without significantly altering external dimensions, making it suitable for sending folded documents, brochures or small objects. The plain white surface provides a neutral appearance for business correspondence and allows for easy printing or labelling.

Advantages

The envelope combines a lightweight construction with a reinforced gusset that supports thicker contents while maintaining a slim profile. Its 120 g/m² paper balances rigidity and flexibility, reducing the risk of creasing during handling. The white finish ensures compatibility with inkjet or laser printing and with adhesive labels, and the expansion design helps organise and separate documents during storage or transit.

Suitable for

• Mailing folded contracts, invoices and brochures
• Storing multi-page reports or sets of documents
• Sending small, flat items such as brochures, CDs in sleeves, or thin samples
• Office and administrative correspondence requiring a professional presentation

Key specifications

• External dimensions: 250 × 353 × 20 mm
• Material weight: 120 g/m² paper
• Colour: white
• Design: side gusset (expansion) for increased capacity
• Surface: suitable for printing and labelling

How to use

Insert documents or flat items into the main compartment, allowing the gusset to expand as needed. For mailing, seal the envelope according to the adhesive or closure type provided, and affix postage and address labels on the front surface. When using a printer for address or logo printing, ensure the paper type and thickness are compatible with your device or use pre-printed labels to avoid jams. Store unused envelopes flat in a dry environment to preserve shape and prevent moisture absorption.

Usage recommendations

For secure mailing of thicker sets, distribute contents evenly to avoid overfilling the gusset. Use protective inner sleeves for fragile items and choose appropriate postage based on weight and thickness.