#10.5 Letter Envelope

4.5″ x 9.5″ x 0.375″ capacity

Our Letter paper envelope has dimensions of 4.5 x 9.5.  This envelope starts perfectly flat (like all Conformer Products) and has a maximum capacity of 0.375″.

Quick Ship envelopes are made from high quality 28 Lb. white wove paper available blank or with one or two color printing in 7 days or less from proof approval.

Made to Order envelopes can be produced in a wide selection paper stocks with printing, custom windows, and security features.  Made to Order envelopes are produced in 10 – 15 working days with multiple processes requiring the most time. PDF or color digital proofs are available upon request.

  Quick Ship Made To Order
Size: 4.5" x 9.5" 4.5" x 9.5"
Printing: Unprinted/1C/2C Unprinted/1C/2C/4C
Coverage: Light Light or Heavy
Bleed: No Available
Stock: White wove White wove
Gauge: 28 lb. 28 lb.
Capacity: 0.375" 0.375"
Carton count: 500 500
FSC or SFI sustainable certified: Yes Yes
Acid/Chlorine free: Acid Free Acid Free
Opening: Long edge Long Edge
Closure: Remoistenable glue Remoistenable glue
Closure flap length: 1.75" 1.75"
Download template: Made to Order Template (PDF)

Conformer envelopes are very well constructed and are thoroughly suited to their task. Their unique structure allows us to maximize pack thickness and minimize damage in the mail stream. They are a good fit all around.

Richard George, Chief Executive Officer, PFE International

The use of the Conformer Envelope definitely makes things a lot easier. It replaced a 9.5 x 12.5 envelope.

Sam Cappellino, Manager of Administrative Services, Blue Cross Blue Shield of Western New York

This new design concept, the quality of the product and the overall presentation is definitely deserving of an award…It has changed the standard packaging of our business of 50 years!

Brian Forsey, Director of Operations, Columbia House Canada

The Conformer Envelopes are a fraction of the cost of the vinyl envelopes alone. Conformer Envelopes make ideal packaging for document retention too.

Alison Hickerson, Supply Manager, H&R Block

A Conformer Envelope with an addressing window is definitely a lot more presentable than providing a large number of invoices in a box with a label stuck on.

Ravi Heeraman, Billing Analyst, Rogers Wireless

[You are] able to get more material into a Conformer Envelope, buy less envelopes and get higher productivity.

Dan Flack, Regional Business Director, Pitney Bowes

Conformer Envelopes run on Pitney Bowes equipment as efficiently as traditional flat envelopes. The envelope expands up to making it an extremely cost effective alternative to hand insertion and gusseted envelopes.

Brian Wilson, National Business Director for Service Bureau Solutions, Pitney Bowes

For the past year since we began working with Conformer Envelopes, we have been featuring them on our fastest, most capable inserter systems and at our booths at the National Postal Forum and Graph Expo. The patented Conformer Envelopes are a great complement to our leading integrated mail and document management solutions.

Pat Brand, Vice President, Global Product Management and Marketing, Pitney Bowes

Quality and Sustainability

Conformer Products, Inc. is committed to balancing quality, environmental sustainability, and great value. By carefully sourcing the right materials, all paper Conformer folders, mailers, portfolios and envelopes are FSC or SFI certified, including great recycled content options. Conformer plastic portfolios and folders are durable, reusable, and made from materials containing post-consumer content or are recyclable. Find out more.