Blake Purely Everyday C4+ 240 x 330 mm 100 gsm Gummed Mailer Envelopes (9709) White Pack 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

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.