Cumberland Window Envelope 90gsm DLX 120 x 235mm White – Box of 500

Your invoices and letters deserve better than a flimsy envelope that wrinkles in the post. These are 90gsm – noticeably stiffer, more professional in the hand. The heat-resistant glassine window won't warp on your laser printer, and the secretive pattern keeps the rest of the document private. Responsibly sourced paper. Box of 500. Add to cart and stop compromising on the bit that lands in someone's letterbox

• 90gsm deluxe weight for a sturdier, more professional feel
• Heat-resistant glassine window – safe for laser printing
• Secretive pattern protects document contents during transit
• DLX size (120 x 235mm) suits standard A4 correspondence
• Responsibly sourced paper
• Box of 500 for consistent office supply