This is our NeoPost DS-1200 running. It can insert and address at speeds of 16,000 per hour. With this equipment we can insert a laser personalized letter with variable data and match the address on the letter to a closed (non-window envelope). Why go anywhere else, we can design, print, laser personalize, insert and mail. We sort lists for the very lowest postage. We are truly a printer that knows mailing and a mailer that knows printing.