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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.



Never get fooled again: unlike, regular plain white envelopes, these no 10 envelopes tear when opened! Exclusive tamper evident slits provide increased security to prevent careful opening and resealing.
Crafted with thick, 24lb paper that ensures upmost privacy. These white no-lick self-seal envelopes are used by businesses to mail documents with sensitive materials. Our legal size envelopes are manufactured from well managed forests and are fully recyclable. 10 non-window: we specifically designed these #10 envelopes with a dark navy, heavy coverage security tint to provide guaranteed privacy for your legal or business mail. Inner envelope Design May Differ! Heavyweight security envelopes no.


Perfect for secure everyday home and business mailing. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming.
Easily print hundreds of envelopes with our low profile envelope design. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.



Provides complete mail security with no need to worry about others seeing your documents, thanks to our dark black security tint lining which completely hides your confidential mail.
Create a professional look for your mail all the way to its destination thanks to our durable 24 white wove paper and smooth front envelope with no windows. Save time with easy to use flip and seal self-seal design; With no need for licking or moistening, our self seal design allows for sending hundreds of invoices quickly and easily and is guaranteed to stay sealed with no need for tape or glue sticks.
1. Amazon Basics
#ad
500-Pack, Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, White, Peel & Seal Closure
#adAmazon Basics #ad - Product dimensions: 4-1/8 x 9-1/2 inches. Includes 500 #10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing.More information #ad
Interior security tint for privacy; securely send checks, invoices, or other confidential documents. Peel-and-seal closure; no moisture needed. 10 business letter envelopes for home or office.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZP5 |
Model | AMZP5 |
More information #ad
2. Aimoh
#ad
24 LB, 500 Count 34010, Premium Security Tint Pattern, Windowless Design, Size 4-1/8 x 9-1/2 Inches, EnveGuard, White, #10 Security Self-Seal Envelopes, Ultra Strong Quick-Seal Closure
#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.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.
More information #ad
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! Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, labeling or hand-addressing, perfect for quick, manufactured with a windowless front panel for easy printing, 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.
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
3. Top Flight
#ad
Strip & Seal, 24 lb, 500 Count, White Paper, Top Flight PSTF10NWT #10 Envelopes, Security Tinted
#adTop Flight #ad - Strip & seal closure. 500 count per box. Standard 10 envelope 4 1/8 x 9 1/2. Heavy 24lb white paper - made in USA. Security tinted.More information #ad
Brand | Top Flight #ad |
Manufacturer | Top Flight #ad |
Height | 4.3 Inches |
Length | 11.8 Inches |
Weight | 6 Pounds |
Width | 10 Inches |
Part Number | PSTF10NWT |
Model | PSTF10NWT |
Warranty | #10 |
More information #ad
4. Splendoress
#ad
#10 White Letter Businesses Envelopes -500 Peel and Seal Tinted Windowless # 10 Envelope, Printer Friendly, Self Stick Bulk Envelops, 500 Self Seal Security Mailing Envelopes
#adSplendoress #ad - Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside. Windowless envelope. No need to lick the flap anymore - Very convenient.More information #ad
Long lasting supply - 500 count per box. X 9 1/2 in size envelop. 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
5. Spark Ink
#ad
500 Count Security Envelopes No.10, Peel & Seal, Self Stick Blank White Envelopes, Quality 24 lb Paper Non-Window, Plain Standard Size Business Envelopes 4-1/8 x 9-1/2 Inch, Self-Seal Envelopes #10
#adSpark Ink #ad - Environmentally friendly: rest easy when you send a letter. Ditch the standard white letter size envelopes and replace them with our no 10 envelopes, Spark Ink spares no expense on thick, security self-seal design. Perfect for check printing or sensitive documents: windowless blank design allows for easy address printing or labels for mass mailing or to simply keep a bulk supply on hand for your home office.Never get fooled again: unlike, regular plain white envelopes, these no 10 envelopes tear when opened! Exclusive tamper evident slits provide increased security to prevent careful opening and resealing.
More information #ad
Maximum strength self seal: unlike other strip and seal envelopes that need extra tape or glue, peel and seal adhesive that really sticks. We’d say we are the best business envelopes #10 that self-seal on Amazon. Crafted with thick, 24lb paper that ensures upmost privacy. These white no-lick self-seal envelopes are used by businesses to mail documents with sensitive materials. Our legal size envelopes are manufactured from well managed forests and are fully recyclable. 10 non-window: we specifically designed these #10 envelopes with a dark navy, heavy coverage security tint to provide guaranteed privacy for your legal or business mail. Inner envelope Design May Differ! Heavyweight security envelopes no.
Brand | Spark Ink #ad |
Manufacturer | Spark Ink #ad |
Part Number | SPI-SEE-ENV-PARENT |
More information #ad
6. Splendoress
#ad
Mailing Envelopes Self Seal, Self Stick Bulk Envelops, Printer Friendly, #10 Security White Letter Businesses Envelopes -100 Peel and Seal Tinted Windowless # 10 Envelope
#adSplendoress #ad - Tinted security pattern - Windowless envelope with a secure, security tint-pattern to protect contents and sensitive information. Laser and inkjet printer compatible - Measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for easy addressing.More information #ad
100 envelope windowless pack - Perfect choice for small businesses, home offices and everyday use. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price. No need to lick the flap anymore - SELF-SEAL adhesive strip creates a super secure seal across each envelope.Brand | Splendoress #ad |
Height | 2.2 Inches |
Length | 9.5 Inches |
Width | 4.12 Inches |
Part Number | Mailing Envelopes - 100 Envelopes |
Model | Mailing Envelopes - 100 Envelopes |
More information #ad
7. Blue Summit Supplies
#ad
Pack of 500, Number 10 Size 4 1/8 x 9 ½ Inch, 10 Envelopes Self Seal Designed for Secure Mailing, Security Tinted with Printer Friendly Design, 500 No. 10 Self Seal Security Envelopes
#adBlue Summit Supplies #ad - Just peel and seal to create a strong lasting seal without licking or moistening. Our security #10 Windowless Envelopes perfectly fit standard 8. 5’’ x 11’’ paper sizes and other large documents.Perfect for secure everyday home and business mailing. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming.
More information #ad
Provides complete mail security. Easily fits invoices, letters, checks, and more. These envelopes are designed for both Laser and Inkjet Printers. No need to worry about others seeing your documents, our dark black security tint completely hides you mail. Easily print hundreds of envelopes with our low profile envelope design. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 0.01 Pounds |
Part Number | BSS-92588-009 |
Model | BSS-92588-009 |
More information #ad
8. 975 Supply
#ad
9-1/2" W x 4-1/8" L, Peel-to-Seal, 10 Pack, Security Tint Window Envelopes, #10
#ad975 Supply #ad - Protective strip keeps adhesive free from dust. Business - #10 - 9 1/2" width x 4 1/8" length - peel & Seal - Wove - White - 10 Envelopes.More information #ad
Perfect for checks, invoices, letters, etc. Require no moisture to seal; simply peel back strip and fold closed. Security tint for privacy. Window positioned 7/8" from left and 1/2" from bottom.Brand | 975 Supply #ad |
Manufacturer | 975 Supply #ad |
Height | 0.1 Inches |
Length | 4.13 Inches |
Weight | 0.13 Pounds |
Width | 9.5 Inches |
Part Number | 975-16473 |
More information #ad
9. CASHIER DEPOT YOUR ONE STOP SHOP FOR ALL CASHIER'S NEEDS
#ad
Left Window, White 500 Envelopes, Security-Tinted, 4 1/8 X 9 1/2, Peel & Seal, 500 Cashier Depot #10 Business Envelope
#adCASHIER DEPOT YOUR ONE STOP SHOP FOR ALL CASHIER'S NEEDS #ad - Made in the USA. Window is 1-1/8" x 4-1/2" positioned 7/8" from left and 1/2" from bottom. Premium 24lb white Paper with Blue Tint. 10 4 1/8 x 9 1/2 with Left Window. Standard no. 500 envelopes with Peel & Seal Closure.More information #ad
Brand | CASHIER DEPOT YOUR ONE STOP SHOP FOR ALL CASHIER'S NEEDS #ad |
Manufacturer | Cashier Depot #ad |
Part Number | BE10PTW |
More information #ad
10. Blue Summit Supplies
#ad
Blue Summit Supplies 500 Number 10 Envelopes Self Seal, Security Tint, Flip and Seal Flap, Number 10 Business Envelopes Letter Size, 4 1/8 x 9 1/2-500 Count
#adBlue Summit Supplies #ad - Designed for secure everyday home and business mailings, our windowless number 10 security envelopes are a perfect fit for standard 8. 5'' x 11'' paper sizes and other folded letter or legal size documents. Smaller #9 or #8 return envelopes will easily fit inside so you can get your invoices paid quicker.Provides complete mail security with no need to worry about others seeing your documents, thanks to our dark black security tint lining which completely hides your confidential mail.
More information #ad
Quickly stuff multiple pieces of business mail into our wide opening #10 security envelope design with large flip-and-seal opening. Create a professional look for your mail all the way to its destination thanks to our durable 24 white wove paper and smooth front envelope with no windows. Save time with easy to use flip and seal self-seal design; With no need for licking or moistening, our self seal design allows for sending hundreds of invoices quickly and easily and is guaranteed to stay sealed with no need for tape or glue sticks.
Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Part Number | BSS-92588-033 |
More information #ad