February 1, 2015

Large Flat Size 9″ x 12″ Envelope

Large flat sized USPS Certified Mail Envelope 9″ x 12″ with our ‘Go Green’ security liner. This flat sized envelope is ideal for accountants and holds up to 36 pages.  The envelope is bright white, and was designed to be used with our approved USPS Certified Mail PC Postage and data processing.  Address letters in seconds ’fast and easy’ no more peel and stick, or green cards to file.    Ships USPS Priority Mail 2-3 day delivery.


This flat sized envelope measures 9″ X 12″ in size and is bright white in color and approved to send USPS Certified Mail with Certified Mail Labels and PC Postage.  No more peel and stick forms or green cards. Address USPS Certified mailings in seconds ‘fast and easy’ –  skip the trip to the Post Office!

Note:  USPS First Class postage requirements for Flat Sized Envelopes (9″ X 12″) require a minimum 2 OZ of First Class Postage.

Ships USPS Priority Mail 2-3 Day Delivery