Purely Everyday Pocket Gummed Window White C5 229X162 90GSM Box of 500

Amazon

Gummed flap for a long shelf life and reliable sealing High quality 90 gsm paper Perfect for business correspondance, letters, brochures and more Window: 45 x 90mm, 60 up, 20 left

Zoro Tools

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