- Standard #10 Business Envelopes Measure 4 1/8 x 9 1/2 with Left Window
- Window Size is 1 1/8" x 4 1/2" positioned 7/8" from left and 1/2" from bottom
- Laser/Inkjet Compatible Window
- 500 Security Envelopes
- Strong Gum Flap
- Sturdy 24lb. White Paper with Blue Tint
- Proudly Made in the USA