Standard Double Window Envelope Specs
- #10 Blank Double-Window Envelopes with Inside Security Tint
24# White Wove - Fits up to 6 Sheets of Paper / 12 Duplex Pages
Flat Envelope Specs
- 10" x 13" Blank Envelopes with Inside Security Tint
- 24# White Wove
- Accommodates 7 Sheets of Paper+
Letters and checks will be mailed in a standard double window envelope. Letters over 6 pages single-sided or 12 pages double-sided will be placed in a flat envelope instead.