The OPP Number 6 Envelopes are premium quality envelopes designed for professional and personal correspondence. Made from durable 24lb paper, these ENV6 envelopes measure 4.75 x 6.5, perfect for mailing standard-sized cards, invitations, and letters. The sleek white color and gummed seal closure add a touch of elegance to your mailings. Whether for business or personal use, these envelopes are suitable for everyday mailing needs. Trust OPP brand envelopes for reliable and secure delivery of your important documents. Upgrade your stationery with these high-quality Number 6 Envelopes from OPP. Ideal for office use, small businesses, and individuals.