Top 9 Envelopes Self Seal Letter Size – Business Mailing Envelopes

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1. Blue Summit Supplies

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Security Tinted with Printer Friendly Design, Number 10 Size 4 1/8 x 9 ½ Inch 100 Pack, 100 No. 10 Self Seal Security Envelopes, Designed for Secure Mailing

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Blue Summit Supplies #ad - Provides complete mail security. Just peel and seal to create a strong lasting seal without licking or moistening. 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 printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. 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.

Our security #10 Windowless Envelopes perfectly fit standard 8. 5’’ x 11’’ paper sizes and other large documents. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. Perfect for secure everyday home and business mailing.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight0.01 Pounds
Part NumberBSS-92588-015
ModelSG_B071R9SBXJ_US

2. Blue Summit Supplies

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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, Pack of 500

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Blue Summit Supplies #ad - 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 printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming.

These envelopes are designed for both Laser and Inkjet Printers. Provides complete mail security. Our security #10 Windowless Envelopes perfectly fit standard 8. 5’’ x 11’’ paper sizes and other large documents. No need to worry about others seeing your documents, our dark black security tint completely hides you mail.

Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. Perfect for secure everyday home and business mailing. Just peel and seal to create a strong lasting seal without licking or moistening. Easily fits invoices, checks, letters, and more.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight0.01 Pounds
Part NumberBSS-92588-009
ModelBSS-92588-009

3. Splendoress

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Printer Friendly, 500 Self Seal Security Mailing Envelopes, #10 White Letter Businesses Envelopes -500 Peel and Seal Tinted Windowless # 10 Envelope, Self Stick Bulk Envelops

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Splendoress #ad - X 9 1/2 in size envelop. Long lasting supply - 500 count per box. Self seal envelope- just peel and stick 4 1/8 in. Windowless envelope. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price. Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside. No need to lick the flap anymore - Very convenient.
BrandSplendoress #ad
ManufacturerSplendoress #ad
Height0.01 Inches
Length9.5 Inches
Weight6.06 Pounds
Width4.12 Inches
Part Number#10 Security Envelopes Windowless
Model#10 Security Envelopes Windowless

4. Splendoress

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Self Stick Bulk Envelops, Mailing Envelopes Self Seal, Printer Friendly, #10 Security White Letter Businesses Envelopes -100 Peel and Seal Tinted Windowless # 10 Envelope

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Splendoress #ad - 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. 100 envelope windowless pack - Perfect choice for small businesses, home offices and everyday use. Tinted security pattern - Windowless envelope with a secure, security tint-pattern to protect contents and sensitive information. No need to lick the flap anymore - SELF-SEAL adhesive strip creates a super secure seal across each envelope. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price.
BrandSplendoress #ad
Height2.2 Inches
Length9.5 Inches
Width4.12 Inches
Part NumberMailing Envelopes - 100 Envelopes

5. Blue Summit Supplies

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Number 10 Business Envelopes Letter Size, Flip and Seal Flap, Blue Summit Supplies 500 Number 10 Envelopes Self Seal, 4 1/8 x 9 1/2-500 Count, Security Tint

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Blue Summit Supplies #ad - 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. 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. 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.

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. Quickly stuff multiple pieces of business mail into our wide opening #10 security envelope design with large flip-and-seal opening.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Part NumberBSS-92588-033

6. Quality Park

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Redi-Strip Closure, Security Tint and Pattern, Quality Park #10 Self-Seal Security Envelopes, 24-lb White Wove, 4-1/8" x 9-1/2", 100/Box QUA69117

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Quality Park #ad - 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.

Store more, longer: reid-strip envelopes have a longer shelf-life thanks to the peel able strip that protects your adhesive from dust. 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. 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.
BrandQuality Park #ad
ManufacturerQuality Park #ad
Height2.03 Inches
Length9.63 Inches
Weight0.91 Pounds
Width4.25 Inches
Part NumberQUA69117
ModelQUA69117

7. Aimoh

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100 Count 34600, #6 3/4 Security Tinted Self-Seal Envelopes, No Window, Size 3-5/8 X 6-1/2 Inches, 24 LB, White

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Aimoh #ad - Premium 24lb paper: manufactured from premium quality 24lb white sturdy paper creating a super high quality feel, perfect for personal greetings and letters. 6 3/4 security envelopes combine durable, a security tinted design and strong self-seal QUICK-SEAL for the best #6 3/4 security self-seal envelopes on the market.

6 3/4 security envelopes are provided in a 100-envelope pack. 6 3/4 security tinted self seal envelopes; want the very best in secure, printer-compatible paper, security-tinted envelopes with a super strong self-seal? Aimoh's No. 100 envelope pack; these envelopes are manufactured with a window-less front panel for the perfect choice for Personal Checks, home offices and everyday use, No. Super security tint pattern; #6 3 / 4 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure personal mailing while protecting sensitive information.

Quick-seal closure; aimoh's #6 3-4 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 Smaller & Personal documents. Measuring 3. 625 x 6. 5 inches.
BrandAimoh #ad
ManufacturerAimoh #ad
Height2 Inches
Length6.8 Inches
Weight0.65 Pounds
Width3.7 Inches
Part Number34600
Model34600

8. JARMITT

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45 Count., Pink, No Window, 4-1/8 X 9-1/2 Inches, 45 Pack #10 Self-Seal Business Envelopes, Square Flap Envelopes with Peel & Seal

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JARMITT #ad - No more licking just peel and stick! Super plus for quick closure! Not see throughthese envelopes are thick enough to block out anyone seeing through the paper. Widely used great for mailing invitations, financial Mail, Announcements, Invoices, Personal Mail, Business Mail, Checks, Letters, Cards, Direct Mail. High qualitydurable and thick paper, strong adhesive, quality look and feel. Classy & elegantvery classy look, Set your mail apart from all the other white envelopes in the mailbox.
BrandJARMITT #ad
ManufacturerJARMITT #ad
Part NumberBE-CP45001

9. Aimoh

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White, 24 LB, EnveGuard, Size 4-1/8 x 9-1/2 Inches, 500 Count 34010, #10 Security Self-Seal Envelopes, Premium Security Tint Pattern, Windowless Design, Ultra Strong Quick-Seal Closure

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Aimoh #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.

Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, perfect for quick, manufactured with a windowless front panel for easy printing, 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.

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! Click the Orange Button to order now.
BrandAimoh #ad
ManufacturerAimoh #ad
Height4.25 Inches
Length11.5 Inches
Width10 Inches
Part Number34010-500
Model34010-500