Cumberland Booklet Mailer with Window 90gsm C4 229x324mm White – Box of 250

Confidential documents shouldn't look like a page count from the outside. These Cumberland booklet mailers use a secretive pattern so no one can see what's inside, plus a heat-resistant glassine window for clean addressing. The 90gsm stock runs through your laser printer without curling or jamming. FSC certified, so the paper's sourced responsibly. 250 per box keeps your confidential mailings covered for weeks

• Secretive pattern keeps document contents private in transit
• Heat-resistant glassine window for clean, professional addressing
• 90gsm stock – laser printer compatible, no curling or jamming
• C4 size (229 x 324mm) fits A4 folded or booklet inserts
• FSC certified – responsibly sourced paper
• Box of 250 – enough for a solid month of confidential mailings