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Laser and inkjet printer compatible; premium construction measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for quick and easy addressing! Click the Orange Button to order now.
Super security tint pattern; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing. 100 envelope pack; these envelopes are manufactured with a window-less front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack.

4" x 4. 1". Package includes 50 security envelopes, perfect for everyday business correspondence and mailing tasks! Mr. Pen #10 envelopes are designed with a security tint pattern to protect contents and sensitive information, perfect for secure mailing.

Premium security tinted pattern; our #10 envelopes are designed with a premium security printed design to protect contents and sensitive information, perfect for secure business and legal mailing while protecting sensitive information.
Quick-seal closure; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing larger documents without splitting. Long lasting supply; large sized envelopes and 500 envelopes in every pack for a long lasting supply, perfect for everyday business correspondence and large mailing tasks! .


With its thick and opaque material, these standard #10 envelopes keep contents completely hidden from outsiders. Windowless design - best for legal and business mail, these plain White letter envelopes are designed without any see-through panels for privacy.
Secured envelopes - make it impossible for prying eyes to read your sensitive information. There's no need to lick, or tape, glue, These regular Mead envelopes peel and seal with secure adhesive. Each pack comes with 500 number 10 envelopes size measures 4 1/8 x 9. 5”. Great value for money - make sure you have a reliable and long-lasting supply of this office essential.

Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. Our security #10 Windowless Envelopes perfectly fit standard 8.
No need to worry about others seeing your documents, our dark black security tint completely hides you mail. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. Perfect for secure everyday home and business mailing.

Compatible with printer:print on our #10 security envelopes with an inkjet printer without worrying about smudging or jamming, giving your business envelopes a professional and sophisticated look.
After-sales guarantee:horchen always provides the best service for our customers, if you have any questions about our products, please feel free to contact us, the products can be returned within 30 days without any reason, we will surely solve it right away. And our envelopes are sealed so firmly that they won't open or tear easily, no need to pass a wetting agent or lick seal, just peel off the adhesive strip, ensuring safe arrival at your destination.

Order now. Windowless design: features a windowless blank design for easy printing or labeling. Long-term supply: no. 10 envelopes come in a box of 500, so you can store them for long-term use. Perfect for mailing large quantities of everyday business envelopes and home mail.
Ideal for mass envelope printing when doing multiple copies of business mail, or for quick handwritten addressing for home us. Secure tone: these envelopes come with a secure navy blue inner stripe that makes it difficult to see through the contents, protecting your important data and sensitive information for confidential documents such as organic business or legal.

Convenient and secure self sealing closure. Made in the USA. Each box comes with 100 envelopes. Simply raise lower flap and press top flap down for a quick seal. Simply raise lower flap and press top flap down for a quick seal.

1. Aimoh
#ad
#10 Security Tinted Self-Seal Envelopes, White, No Window, EnveGuard, Size 4-1/8 X 9-1/2 Inches, 24 LB, 100 Count 34100
#adAimoh #ad - Enveguard technology; in today's world where our health, privacy and security is so much threatened, at Aimoh we approve only the highest quality products, the team of engineers and developers at Aimoh have researched and developed the EnveGuard Technology and Approval systems, produced from the best and safest material on earth.Laser and inkjet printer compatible; premium construction measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for quick and easy addressing! Click the Orange Button to order now.
More information #ad
Quick-seal closure; our #10 envelopes are designed with an ultra strong self-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing for any letter sized and larger documents without splitting. Super security tint pattern; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing. 100 envelope pack; these envelopes are manufactured with a window-less front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Height | 2.2 Inches |
Length | 9.7 Inches |
Width | 4.3 Inches |
Part Number | 34100 |
Model | 34100 |
More information #ad
2. Mr. Pen
#ad
10 Security Envelopes, Business Envelopes, Security Envelopes Peel and Seal, Envelopes Self Seal, No 10 Envelopes., 50 Pack, Self Sealing Envelopes, Mr. Pen- Security Envelopes #10
#adMr. Pen #ad - Mr. Mr. Pen security envelopes are fully compatible with most inkjet and laser printers for quick and easy addressing. Each security envelope measures 9.4" x 4. 1". Package includes 50 security envelopes, perfect for everyday business correspondence and mailing tasks! Mr. Pen #10 envelopes are designed with a security tint pattern to protect contents and sensitive information, perfect for secure mailing.
More information #ad
Pen #10 envelopes are designed with a strong self-seal adhesive strip to create a complete, super secure seal across each envelope's width that won't easily open or tear. The bright white paper makes an impression on business mailings and personal correspondence.Brand | Mr. Pen #ad |
Manufacturer | Mr. Pen #ad |
Part Number | NAM50 |
Model | NAM50 |
More information #ad
3. Aimoh
#ad
Size 4-1/8 x 9-1/2 Inches, White, EnveGuard, 500 Count 34010, Windowless Design, Premium Security Tint Pattern, #10 Security Self-Seal Envelopes, Ultra Strong Quick-Seal Closure, 24 LB
#adAimoh #ad - Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless front panel for easy printing, perfect for quick, labeling or hand-addressing, mass business mailings.Premium security tinted pattern; our #10 envelopes are designed with a premium security printed design to protect contents and sensitive information, perfect for secure business and legal mailing while protecting sensitive information.
More information #ad
10 security tinted self seal envelopes; forget cheap envelopes that easily split and aren't suitable for secure mailing, our #10 envelopes are designed with a premium security tint to protect sensitive information and a super strong SELF-SEAL strip, perfect for larger documents. Quick-seal closure; our #10 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, super secure seal across each envelope's width that won't easily open or tear, ideal for mailing larger documents without splitting. Long lasting supply; large sized envelopes and 500 envelopes in every pack for a long lasting supply, perfect for everyday business correspondence and large mailing tasks! .
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Height | 4.25 Inches |
Length | 11.5 Inches |
Width | 10 Inches |
Part Number | 34010-500 |
Model | 34010-500 |
More information #ad
4. Splendoress
#ad
500 Pack Windowless, #10 Envelopes Letter Size Self Seal, Legal Size Regular Plain Envelopes 4-1/8 x 9-1/2 Inches, 24 LB Envelops, Business White Security Tinted Peel and Seal
#adSplendoress #ad - Windowless envelope. Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price.More information #ad
Self seal envelope- just peel and stick 4 1/8 in. Long lasting supply - 500 count per box. X 9 1/2 in size envelop. Ndaa section 889 Compliance Certfication. No need to lick the flap anymore - Very convenient.Brand | Splendoress #ad |
Manufacturer | Splendoress #ad |
Height | 4.25 Inches |
Length | 11.5 Inches |
Weight | 6.06 Pounds |
Width | 10 Inches |
Part Number | #10 Security Envelopes Windowless |
Model | #10 Security Envelopes Windowless |
More information #ad
5. Mead
#ad
4 1/8 x 9.5'', TRTAZ11A-102021-v1, Mead Security Envelopes Self Seal #10, Windowless Mailing Envelopes, 500 Pack
#adMead #ad - The solid surface makes it easy to print labels and addresses. Made with the mead seal of quality - protect your mail without compromising quality. These self sealing envelopes are created by Mead, a brand known for premium paper products and stationery.With its thick and opaque material, these standard #10 envelopes keep contents completely hidden from outsiders. Windowless design - best for legal and business mail, these plain White letter envelopes are designed without any see-through panels for privacy.
More information #ad
Seal in seconds - these easy close self stick envelopes keep your mail secure and sealed conveniently. Secured envelopes - make it impossible for prying eyes to read your sensitive information. There's no need to lick, or tape, glue, These regular Mead envelopes peel and seal with secure adhesive. Each pack comes with 500 number 10 envelopes size measures 4 1/8 x 9. 5”. Great value for money - make sure you have a reliable and long-lasting supply of this office essential.
Brand | Mead #ad |
Manufacturer | Mead #ad |
Height | 33.37 Inches |
Length | 33.37 Inches |
Width | 33.37 Inches |
Part Number | AST 2 |
Model | TRTAZ11A-102021-v1 |
More information #ad
6. Blue Summit Supplies
#ad
Designed for Secure Mailing, Security Tinted with Printer Friendly Design, 100 No. 10 Self Seal Security Envelopes, Number 10 Size 4 1/8 x 9 ½ Inch 100 Pack
#adBlue Summit Supplies #ad - Easily fits invoices, checks, letters, and more. Easily print name or logo on our low profile envelope design. Easily store and quickly use our 24 LB white wove envelopes with our 100 count value pack with small package design.Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. Our security #10 Windowless Envelopes perfectly fit standard 8.
More information #ad
5’’ x 11’’ paper sizes and other large documents. These envelopes are designed for both Laser and Inkjet Printers. Provides complete mail security. Just peel and seal to create a strong lasting seal without licking or moistening. No need to worry about others seeing your documents, our dark black security tint completely hides you mail. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. Perfect for secure everyday home and business mailing.
Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 0.01 Pounds |
Part Number | BSS-92588-015 |
Model | SG_B071R9SBXJ_US |
More information #ad
7. Horchen
#ad
White,Horchen, Invoices, 500 Count #10 Security Envelopes,Peel & Seal Windowless Business Envelopes,Security Tint Pattern for Mailing of Checks, Documents, 4 1/8 x 9 1/2 Inch
#adHorchen #ad - Security tint pattern:our #10 security envelopes are made of 110GSM paper with high quality security pattern inside, the security tone makes the message hard to see, providing privacy for your business mail. Quick-seal closure:#10 envelopes are designed to be self-sealing, press and seal.Compatible with printer:print on our #10 security envelopes with an inkjet printer without worrying about smudging or jamming, giving your business envelopes a professional and sophisticated look.
More information #ad
10 security envelopes:horchen envelopes include 500 #10 security envelopes measuring 4-1/8 x 9-1/2 Inches and premium security shades to protect sensitive information, perfect for businesses, home offices and everyday use. After-sales guarantee:horchen always provides the best service for our customers, if you have any questions about our products, please feel free to contact us, the products can be returned within 30 days without any reason, we will surely solve it right away. And our envelopes are sealed so firmly that they won't open or tear easily, no need to pass a wetting agent or lick seal, just peel off the adhesive strip, ensuring safe arrival at your destination.
Brand | Horchen #ad |
Manufacturer | Horchen #ad |
Part Number | E10-WH-500 |
Model | E10-WH-500 |
More information #ad
8. PANDRI
#ad
500 Count, 24 LB, #10 Security Self-Seal Envelopes, Invoices and Statements, Security Tint Pattern for Secure Mailing, PANDRI Windowless Business Mailing Envelopes, Size 4-1/8 x 9-1/2 Inch
#adPANDRI #ad - This is the ideal envelope for home and office use. 500 pack security envelopes: pandri #10 envelopes measuring 4 1/8 x 9 1/2 are ideal for any document and are perfectly suited for business checks, invoices and documents.Order now. Windowless design: features a windowless blank design for easy printing or labeling. Long-term supply: no. 10 envelopes come in a box of 500, so you can store them for long-term use. Perfect for mailing large quantities of everyday business envelopes and home mail.
More information #ad
Quick self-seal: this design makes it quicker and easier to send more invoices, just peel and press, no glue sticks and lick envelopes to quickly seal envelopes and save time. Ideal for mass envelope printing when doing multiple copies of business mail, or for quick handwritten addressing for home us. Secure tone: these envelopes come with a secure navy blue inner stripe that makes it difficult to see through the contents, protecting your important data and sensitive information for confidential documents such as organic business or legal.
Brand | PANDRI #ad |
Manufacturer | PANDRI #ad |
Part Number | ENVELOPES-500-2022 |
Model | ENVELOPES-500-2022 |
More information #ad
9. Mead
#ad
100/Box CO284, 4-1/8" x 9-1/2", White, Mead #10 Business Envelope, Security Tinted, Self Seal
#adMead #ad - White wove stock for reliable quality. White wove stock. Security tinted for added privacy and confidentiality. Each #10 size envelope measures 4-1/8" x 9-1/2".Convenient and secure self sealing closure. Made in the USA. Each box comes with 100 envelopes. Simply raise lower flap and press top flap down for a quick seal. Simply raise lower flap and press top flap down for a quick seal.
More information #ad
Security tinted for added privacy and confidentiality. The sustainable Forest Initiative program promotes responsible forest management. Envelopes feature premium, 24 lb. Convenient and secure self sealing closure. Each #10 size envelope measures 4-1/8" x 9-1/2". Premium, 24 lb.Brand | Mead #ad |
Manufacturer | Mead #ad |
Height | 4.25 Inches |
Length | 3.25 Inches |
Width | 9.63 Inches |
Part Number | CO284m |
Model | CO284m |
More information #ad
10. Amazon Basics
#ad
White, Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Closure, 500-Pack
#adAmazon Basics #ad - 10 business letter envelopes for home or office. Includes 500 - 10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing.More information #ad
Product dimensions: 4-1/8 x 9-1/2 inches. Interior security tint for privacy; securely send checks, invoices, or other confidential documents. Peel-and-seal closure; no moisture needed.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Height | 3.5 Inches |
Length | 9.5 Inches |
Weight | 6.47 Pounds |
Width | 4.13 Inches |
Part Number | AMZP5 |
Model | AMZP5 |
More information #ad