Blake Purely Packaging C4 324 x 229 25 mm 140 gsm Gusset Pocket Peel & Seal Window Envelopes (9001) White Pack of 125

The expandable gusset envelope offers more capacity than flat envelopes, making it ideal for bulky or thicker items like documents, brochures, and catalogues, while maintaining a sleek, compact shape. Available in various gusset sizes and widths. PEFC Certified | Our materials are 70% sourced from PEFC-certified, sustainably managed forests and controlled sources. By choosing this product, you are supporting responsible forestry and environmental sustainability with us. Pack of 125 | 140 GSM Quality. Sealing Type: Peel and Seal | Easy-to-use, secure, and tamper-proof closure with a self-adhesive strip for fast, reliable sealing without moisture or heat. Size: C4 Window (324 x 229 x 25 mm), with a gusset capacity of 25 mm for thick or bulky contents. Suitable for C4 envelopes, where you can fold A4 paper once. Model No. 9001