C5 Mailer Gummed Reverse Window White 100gsm Envelopes (Qty 500) 162mm x 229mmIntroducing the C5 Mailer Gummed Reverse Window White Envelopes (Qty 500), an excellent choice for secure and professional mailing. Made from 100gsm paper, these envelopes feature a sleek white finish and a reverse window placement for discreet address visibility. Measuring 162mm x 229mm, they are designed with a traditional gummed closure for a reliable and secure seal. Perfect for business correspondence, invoices, and personal mail, these envelopes