Purely Everyday Mailer Gummed Full Face Window White C4 229X324 100GSM Box of 250

Amazon

Gummed flap for a long shelf life and reliable sealing High quality 100 gsm paper Mailing wallets perfect for use on mailing and inserting machines Ideal for business correspondance, letters and other mail Full Face Window: 200 x 280 mm, 15 up, 15 left

Zoro Tools

The most extensive range of mailing wallets available from stock in the world! Sizes that are unique to Blake and window positions that cater for every address permutation justify our bold statement.