Top 10 Letter Envelopes Self Seal Security – Business Mailing Envelopes

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1. Aimoh

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

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Aimoh #ad - 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. 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.

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.

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.
BrandAimoh #ad
ManufacturerAimoh #ad
Height4.25 Inches
Length11.5 Inches
Width10 Inches
Part Number34010-500
Model34010-500

2. Mead

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45 Per Box 75026, Security, 4-1/8" X 9-1/2", Press-it Seal-it, White, Mead No.10 Envelopes

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Mead #ad - Mead press it seal it number 10 security envelopes, 45 envelopes per box. White envelopes with self adhesive seal, Security lining for privacy. Size: 4 to 1/8 inches x 9 to 1/2 inches.
BrandMead #ad
ManufacturerACCO Brands #ad
Height4.3 Inches
Length9.7 Inches
Weight0.02 Pounds
Width1.5 Inches
Part Number75026
Model75026
Warrantykkk

3. Amazon Basics

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Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Closure, 500-Pack, White

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Amazon Basics #ad - Includes 500 #10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing. Product dimensions: 4-1/8 x 9-1/2 inches. Peel-and-seal closure; no moisture needed. Interior security tint for privacy; securely send checks, invoices, or other confidential documents. 10 business letter envelopes for home or office.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Part NumberAMZP5
ModelAMZP5

4. Blue Summit Supplies

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

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Blue Summit Supplies #ad - These envelopes are designed for both Laser and Inkjet Printers. Easily store and quickly use our 24 LB white wove envelopes with our 100 count value pack with small package design. 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. 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.

Provides complete mail security. Just peel and seal to create a strong lasting seal without licking or moistening. Easily fits invoices, letters, checks, and more. Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. Easily print name or logo on our low profile envelope design.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight0.01 Pounds
Part NumberBSS-92588-015
ModelSG_B071R9SBXJ_US

5. Splendoress

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

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Splendoress #ad - 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. 100 envelope windowless pack - Perfect choice for small businesses, home offices and everyday use. 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. Tinted security pattern - Windowless envelope with a secure, security tint-pattern to protect contents and sensitive information.
BrandSplendoress #ad
Height2.2 Inches
Length9.5 Inches
Width4.12 Inches
Part NumberMailing Envelopes - 100 Envelopes
ModelMailing Envelopes - 100 Envelopes

6. Splendoress

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

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Splendoress #ad - Self seal envelope- just peel and stick 4 1/8 in. Windowless envelope. 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. 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
Height4.25 Inches
Length11.5 Inches
Weight6.06 Pounds
Width10 Inches
Part Number#10 Security Envelopes Windowless
Model#10 Security Envelopes Windowless

7. Aimoh

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

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Aimoh #ad - 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.

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. 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.

Measuring 3. 625 x 6. 5 inches. 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. 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. 6 3/4 security envelopes are provided in a 100-envelope pack.
BrandAimoh #ad
ManufacturerAimoh #ad
Height2 Inches
Length6.8 Inches
Weight0.65 Pounds
Width3.7 Inches
Part Number34600
Model34600

8. Blue Summit Supplies

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

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Blue Summit Supplies #ad - 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.

Quickly stuff multiple pieces of business mail into our wide opening #10 security envelope design with large flip-and-seal opening. 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.

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. 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.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Part NumberBSS-92588-033

9. Quality Park

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Box of 500, 10 4 1/8" x 9 1/2", Quality Park Redi-Seal Security Window Envelopes, White

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Quality Park #ad - Security-tinted inside for privacy and confidentiality. Save time with quality park security envelopes that have built-in Redi-Seal technology closures - requires no moisture to seal! Quickly get that stack of papers delivered to important recipients. Simply raise the lower flap and press to seal. Addresses appear through window - no need to hand-address these security window envelopes. Quality park envelopes feature a unique double flap design that keeps the gum from sticking before use.
BrandQuality Park #ad
Manufacturer0 #ad
Height4.1 Inches
Length14.2 Inches
Weight6.09 Pounds
Width9.8 Inches
Part Number21418
Model21418

10. BAZIC Products

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BAZIC Security Self Seal Envelope 3 5/8" x 6 1/2" #6, No Window Tint Pattern Mailing Envelopes, Office Checks Invoices 55/Pack, Peel & Seal, 1-Pack

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BAZIC Products #ad - Windowless design. These envelopes can easily fit invoices, letters, gift cards, checks, etc. Envelopes manufactured with a windowless front panel for easy printing, perfect for quick, labeling or hand-addressing, mass business mailings.

Perfect for everyday business use, these standard white envelopes are crafted of heavy, durable 20lb paper and securely holds hefty files during transit. 6-3/4 security envelopes. Multi-purpose. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.

Just peel and seal to create a strong lasting seal without licking or moistening. Secure. White 20lb stock. These envelopes can be used for virtually anything you need them for! These 3 5/8" x 6 1/2" inch envelopes are designed with security print to protect contents and sensitive information, perfect for protecting sensitive information from others.
BrandBAZIC Products #ad
ManufacturerBAZIC Products #ad
Height3.72 Inches
Length6.69 Inches
Weight0.4 Pounds
Width1.18 Inches
Part Number5066
Model5066