Indigo® C4 White Window Envelopes – Self Seal, 90gsm Premium Quality, 324x229mm A4 Size – Strong Eco-Friendly Mailing Envelopes for Home, Office & E-Commerce Postage – Pack of 1000

• 📏 C4 Size (324 × 229 mm) – Holds A4 sheets flat without folding, ideal for letters, invoices, or brochures.
• 💪 90gsm High-Quality Paper – Strong and reliable, preventing rips or bends during transit.
• 🪟 Clear Window Panel – Displays address neatly for a professional appearance and efficient mailing.
• 🔒 Self-Seal Closure – Simple peel-and-press seal saves time and ensures secure posting.
• 🌱 Eco-Friendly Paper – Made from PEFC-certified materials that are fully recyclable and sustainably sourced.

Send important documents with confidence using Indigo C4 White Window Envelopes, the reliable choice for professional correspondence. Crafted from premium 90gsm PEFC-certified paper, these durable, eco-friendly envelopes are perfect for A4 sheets without folding. Each envelope features a clear address window for fast dispatch and a secure self-seal closure for quick, clean sealing. Ideal for e-commerce, offices, schools, and home use, they combine practicality, sustainability, and quality presentation in every envelope.