JAM PAPER #10 Policy Business Premium Envelopes - 4 1/8 x 9 1/2 - Dark Grey - 25/Pack Color: Gray Size: #10 Policy (4.125 x 9.5 inches) Quantity: 25 per pack Our envelopes are made from 28 lb paper and feature a straight flap with texture finish These versatile envelopes are perfect for personal mail, bills, invoices, business memos, marketing materials, cash, coins, and much more