As an Amazon Associate I earn from qualifying purchases.
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.

An excellent value: bright white 24-lb paper makes an impression for business mailings and personal correspondence; get 100 4-1/8 x 9-1/2 inch envelopes.





100 9 x 12 catalog envelopes in every pack for a long lasting supply, easy bulk mailing and everyday business correspondence! For 8.
Security tint pattern; ideal for secure business mailing and sensitive correspondence, security tint pattern to protect contents, each 9x12 envelope contains a super secure, information and data when mailing.

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! Click the Orange Button to order now.
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. 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.


Made in the usa - proudly made right here in the United States. Peel off the protective strip and press the flap firmly to create a tight bond that seals the contents safely inside the envelope.
1. Aimoh
#ad
24 LB, 100 Count 34100, #10 Security Tinted Self-Seal Envelopes, EnveGuard, No Window, Size 4-1/8 X 9-1/2 Inches, White
#adAimoh #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.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
Enveguard technology; in today's world where our health, 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, privacy and security is so much threatened, produced from the best and safest material on earth. 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. Quality Park
#ad
4-1/8" x 9-1/2", Redi-Strip Closure, Security Tint and Pattern, 24-lb White Wove, Quality Park #10 Self-Seal Security Envelopes, 100/Box QUA69117
#adQuality Park #ad - Less yuck: we promise you won't miss licking envelopes or crumbly, drippy sponges; complete your mailings, no accessories required. Enhanced security: offer the protection clients deserve; a security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text.An excellent value: bright white 24-lb paper makes an impression for business mailings and personal correspondence; get 100 4-1/8 x 9-1/2 inch envelopes.
More information #ad
Store more, longer: reid-strip envelopes have a longer shelf-life thanks to the peel able strip that protects your adhesive from dust. Save time with self-stick: quality park #10 Security Envelopes have a strong peel & stick closure that helps you fly through mailings in record time.Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 2.03 Inches |
Length | 9.63 Inches |
Weight | 0.91 Pounds |
Width | 4.25 Inches |
Part Number | QUA69117 |
Model | QUA69117 |
More information #ad
3. Amazon Basics
#ad
Amazon Basics Catalog Mailing Envelopes, 9x12 Inch, White, Peel & Seal, 100-Pack
#adAmazon Basics #ad - Durable 28-pound white woven paper for quality and strength. Ideal for mailing catalogs, brochures, booklets, and multi-page documents. Easy-to-seal peel and Seal closure—no moisture needed. Measures 9 by 12 inches each. 100-pack of no. 10-1/2 catalog envelopes.More information #ad
Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZP15 |
Model | AMZP15 |
More information #ad
4. Mead
#ad
4-1/8" X 9-1/2", Mead No.10 Envelopes, White, 45 Per Box 75026, Press-it Seal-it, Security
#adMead #ad - White envelopes with self adhesive seal, Security lining for privacy. Mead press it seal it number 10 security envelopes, 45 envelopes per box. Size: 4 to 1/8 inches x 9 to 1/2 inches.More information #ad
Brand | Mead #ad |
Manufacturer | ACCO Brands #ad |
Height | 4.3 Inches |
Length | 9.7 Inches |
Weight | 0.02 Pounds |
Width | 1.5 Inches |
Part Number | 75026 |
Model | 75026 |
Warranty | kkk |
More information #ad
5. Amazon Basics
#ad
Pack of 500, Amazon Basics #10 Security Tinted Business Envelopes, Moisture Sealed, 4 1/8-Inch x 9 1/2 Inch
#adAmazon Basics #ad - Dimensions: each envelope measures 4-1/8 by 9-1/2 inches HxL. Moisture-sealed v-flap design; made of premium 24-pound white woven paper.More information #ad
Securely contains business checks, folded letter size documents, resumes or personal letters. 500 envelopes for business or personal use; security tinted interior for added document privacy.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Height | 0.01 Inches |
Length | 9.5 Inches |
Weight | 0.1 Pounds |
Width | 4.13 Inches |
Part Number | AMZSEC10 |
Model | AMZSEC10 |
More information #ad
6. Splendoress
#ad
Printer Friendly, 500 Self Seal Security Mailing Envelopes, Self Stick Bulk Envelops, #10 White Letter Businesses Envelopes -500 Peel and Seal Tinted Windowless # 10 Envelope
#adSplendoress #ad - X 9 1/2 in size envelop. Windowless envelope. No need to lick the flap anymore - Very convenient. Long lasting supply - 500 count per box. Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside.More information #ad
High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price. Self seal envelope- just peel and stick 4 1/8 in.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
7. Aimoh
#ad
Ultra Strong Quick-Seal, 100 9 x 12 SELF Seal Security White Catalog Envelopes, 28lb, Security Tinted, 9 x 12 inch 38100
#adAimoh #ad - White 28lb stock; perfect for everyday business use, super secure seal across each envelope's width that won't easily open or tear and use high quality, aimoh’s 9x12 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, white 28lb stock for a professional finish.100 9 x 12 catalog envelopes in every pack for a long lasting supply, easy bulk mailing and everyday business correspondence! For 8.
More information #ad
5x11 documents; large 9x12 size and strong quick-seal closure security tinted envelopes, perfect for photos, thicker, catalogs, larger documents and other business mailings.9x12 catalog envelopes; aimoh’s white 9x12 security envelopes combine a professional security tint pattern, large size for business documents and premium quality for the best 9x12 envelopes on the market. Security tint pattern; ideal for secure business mailing and sensitive correspondence, security tint pattern to protect contents, each 9x12 envelope contains a super secure, information and data when mailing.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Height | 2.5 Inches |
Length | 9 Inches |
Weight | 4.06 Pounds |
Width | 12 Inches |
Part Number | FBA_38100 |
Model | FBA_38100 |
More information #ad
8. Aimoh
#ad
White, #10 Security Self-Seal Envelopes, Windowless Design, Ultra Strong Quick-Seal Closure, 500 Count 34010, Premium Security Tint Pattern, 24 LB, EnveGuard, Size 4-1/8 x 9-1/2 Inches
#adAimoh #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.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! Click the Orange Button to order now.
More information #ad
Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings. 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. 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.
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
9. Mead
#ad
Mead #10 Envelopes, 50 Pack 75050, White, 4-1/8" x 9-1/2"
#adMead #ad - Plain white envelope with gummed flap. 50 / box. Ideal for use in the home or at the office. Size: 4-1/4" x 9-1/2". Printed lining to shield your information.More information #ad
Brand | Mead #ad |
Manufacturer | ACCO Brands Corporation #ad |
Height | 0.6 Inches |
Length | 4.25 Inches |
Weight | 0.13 Pounds |
Width | 1.5 Inches |
Part Number | 75050 |
Model | 75050 |
Warranty | kkk |
More information #ad
10. EnDoc
#ad
15 Pack, White 28lb Heavyweight Paper, Office, Mailing Documents, Business, Legal, For Home, or School., EnDoc 9x12 Open End Self Seal Envelopes
#adEnDoc #ad - Thank you for supporting American manufacturing! Self sealing closure - makes securing contents quick and easy. Catalog envelopes - Are perfect for catalogs, brochures, and leaflets.Made in the usa - proudly made right here in the United States. Peel off the protective strip and press the flap firmly to create a tight bond that seals the contents safely inside the envelope.
More information #ad
Super strong construction – standard white envelopes are crafted of Heavy, Durable 28lb Paper for Exceptional Rip, Tear & Puncture Resistance. Heavyweight envelope set – pack of 15 single envelopes accommodates Variety of Small & Large Documents for Home, Office, Business, Legal & More.Brand | EnDoc #ad |
Manufacturer | EnDoc #ad |
Part Number | 10x1315 |
Model | 10x1315 |
More information #ad