Purely Everyday Pocket Self Seal Window White C5 229X162 100GSM Box of 500

Amazon

Easy to use Self Seal closure High quality 100 gsm paper Perfect for business correspondance, letters, brochures and more High Window: 45 x 100 mm, 72 up, 15 left

Zoro Tools

A vast array of white envelopes catering for every size. With gummed, self-seal, pocket and wallet varieties available.