Envelopes de envio MAILmedia B4 autoadesivos branco, sem janela, 24,3 g

MAILmedia B4 self-adhesive white mailing bags are lightweight postal mailers designed for sending documents and flat items in B4 format. Each bag weighs 24.3 g and features a plain white exterior without a transparent window, offering a smooth surface suitable for printing or applying address labels. The bags close quickly with an integrated adhesive strip for reliable sealing during transit and are intended for office, e-commerce and postal use where economical, low-weight packaging is required.

Advantages

The plain white, windowless design gives a clean appearance and full privacy for enclosed contents while providing an even surface for printing or handwriting addresses. The self-adhesive strip enables fast and secure closure without additional tape or glue. At 24.3 g per bag the mailers contribute to lower postage costs for lightweight shipments. The flexible material adapts to flat items, protecting documents from dust and light handling during transport.

Suitable for

• Sending printed documents, certificates and brochures in B4 format
• Dispatching flat samples, thin catalogs or promotional materials
• E-commerce sellers shipping flat items such as posters or small accessories
• Internal office mail and postal correspondence

Key specifications

• Format: B4-compatible interior dimensions for flat items
• Weight per bag: 24.3 g
• Color: white, opaque exterior
• Closure: integrated self-adhesive strip (peel-and-seal)
• Window: none (solid face for labels or direct printing)
• Material: flexible protective film suitable for postal use

How to use

Place the B4 documents or flat items inside the mailer so they lie flat and centered. Remove the protective liner from the adhesive strip and press the flap firmly along the edge to close. For added security, press along the full length of the seal and optionally reinforce with tape if required by the carrier. Address and postage can be applied directly onto the white surface by printing, labelling or handwriting.

Recommendations

Store the mailing bags in a dry, cool place away from direct sunlight to preserve the adhesive. For best results when printing addresses directly, test your printer on a single mailer first to confirm compatibility with the material. Use additional padding or a rigid insert for fragile or bend-sensitive contents.