Top 10 Windowless Envelopes Self Seal – Business Mailing Envelopes

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1. Aimoh

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

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Aimoh #ad - Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, labeling or hand-addressing, manufactured with a windowless front panel for easy printing, perfect for quick, mass business mailings.

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.

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

2. Mead

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4 1/8 x 9.5 inch, 500 Pack, Windowless Mailing Envelopes, Mead Security Envelopes Self Seal #10

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Mead #ad - With its thick and opaque material, these blank standard #10 envelopes keep contents completely hidden from outsiders. Secured envelopes - make it impossible for prying eyes to read your sensitive information.

Seal in seconds - these easy close self stick envelopes keep your mail secure and sealed conveniently. Great value for money - make sure you have a reliable and long-lasting supply of this office essential. There's no need to lick, or tape, glue, These regular Mead envelopes peel and seal with secure adhesive. Windowless design - best for legal and business mailing, these plain White letter envelopes are tinted without any see-through panels for privacy.

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. Large bulk box comes with 500 number 10 envelopes size measures 4 1/8 x 9. 5”.
BrandMead #ad
ManufacturerMead #ad
Height33.37 Inches
Length33.37 Inches
Width33.37 Inches
Part NumberAST 2
ModelTRTAZ11A-102021-v1

3. Blue Summit Supplies

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

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Blue 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. 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. 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.

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. Smaller #9 or #8 return envelopes will easily fit inside so you can get your invoices paid quicker.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Part NumberBSS-92588-033

4. HERKKA

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White, 500 Count, 24 LB, No.10 Windowless Bussiness Envelopes, #10 Security Self-Seal Envelopes, Security Tinted with Printer Friendly Design, Size 4-1/8 x 9-1/2 Inch

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HERKKA #ad - Easy 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. Premium security tint pattern: the interior of our #10 security envelopes use a dark navy, heavy coverage security tint to provide guaranteed privacy for your legal or business mail, offer the protection contents and sensitive information, a security tint makes envelopes hard to see through that ensures upmost privacy.

500 pack self seal bussiness envelopes:herkka #10 security envelopes are designed with peel & seal closure—no moisture needed and a premium security tint to protect sensitive information and a super strong SELF-SEAL strip. Perfect for home or office; securely send checks, invoices, or other confidential documents. Click the Orange Button to order now.

Perfect for quick, 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! Fully compatible with most inkjet and laser printers for quick and easy addressing. Perfect for check printing design: herkka envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a 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.
BrandHERKKA #ad
ManufacturerHERKKA #ad
Part NumberNo10-Lixing

5. Office Deed

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Statements & Legal Document, Office Deed 500 #10 Envelopes SELF SEAL Business Envelope Windowless Design, Security Tint Pattern for Secure Mailing, Invoices, 4-1/8 x 9-1/2 Inches

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Office Deed #ad - Mail invoices, statements and other important documents with confidence. The liner keeps the gum dust-free before use. Simply press flaps together for a secure, strong seal.  . Quality: our security self seal envelopes made of 24-lb white wove.

Peel & seal closure: with the peel & seal closure, envelopes do not require licking to seal. Privacy: protect confidential client information with our security tinted envelopes. They come in boxes of 500, so you can stock up for long-term use.  . Our products will the perfect fit for all official purpose with high standard quality. Windowless envelope; windowless envelopes for easy printing, labeling or perfect for quick, mass business mailings.

The blue tint pattern makes impossible to see the details of the contents, even when held up to the light. Wove finish adds a professional touch. 500 envelopes in each box: our #10 4 1/8" x 9 1/2" self stick envelopes ideal for any document from official business letters to business check.
BrandOffice Deed #ad
ManufacturerOffice Deed #ad
Part NumberSSEWL
ModelSSEWL

6. Splendoress

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

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Splendoress #ad - X 9 1/2 in size envelop. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price. No need to lick the flap anymore - Very convenient. Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside. Windowless envelope. Long lasting supply - 500 count per box. Self seal envelope- just peel and stick 4 1/8 in.
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. 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. Tinted security pattern - Windowless envelope with a secure, security tint-pattern to protect contents and sensitive information. 100 envelope windowless pack - Perfect choice for small businesses, home offices and everyday use. 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
ModelMailing Envelopes - 100 Envelopes

8. ValBox

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Secure Mailing Envelopes, 24 LB White Business Envelopes, No. 10 Windowless Security Tint Pattern, 4-1/8x9-1/2 Inches, 200 Count, ValBox #10 Security Envelopes Self Seal

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ValBox #ad - With a easy peel-off strip that reveals a strong, permanent adhesive that won’t rip or tear even through long haul journeys. 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: no glue sticks required. Strong adhesive: with the strong adhesive flap, valbox #10 security envelopes will be more evident if tampered. 10 security tinted self seal envelopes 200 count: forget poor quailty 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.

No need to worry about opening them easily by others. Premium security tinted pattern: these mailing envelopes feature high quality security patterns with heavy paper stock to protect confidential information, for absolute peace of mind when mailing sensitive information. If there's anything make you unhappy or unsatisfied about the products, please do contact us without any hesitation.
BrandValBox #ad
ManufacturerValBox #ad
Part NumberVB011

9. ValBox

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ValBox 500 Count #10 Security Self-Seal Envelopes Windowless Design Security Tint Pattern for Secure Mailing 4-1/8x9-1/2" ,White Business Envelopes

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ValBox #ad - No need to worry about opening them easily by others. Quick-seal closure: no glue sticks required. Strong adhesive: with the strong adhesive flap, valbox #10 security envelopes will be more evident if tampered. 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: these mailing envelopes feature high quality security patterns with heavy paper stock to protect confidential information, for absolute peace of mind when mailing sensitive information. 10 security tinted self seal envelopes 500 count: forget the 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.

With a easy peel-off strip that reveals a strong, permanent adhesive that won’t rip or tear even through long haul journeys. If there's anything make you unhappy or unsatisfied about the products, please do contact us without any hesitation.
BrandValBox #ad
ManufacturerValBox #ad
Part NumberVB012
ModelVB012

10. Xxcxpark

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Xxcxpark 250 PCS #10 Brown Self Seal Kraft 4-1/8 x 9-1/2 inches Security Envelopes, Windowless Invisible Envelopes Super Strong Quick Seal Envelopes Security Tint Pattern Secure

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Xxcxpark #ad - We offer the best service - xxcxpark is professional manufacture of paper supplies who is devoted to provide perfect solutions for home and office documents organizing. High quality & fine workmanship - say goodbye to the security envelopes in cheap quality. Here our #10 self seal security envelopes are made of high quality material with fine workmanship to keep the envelopes stay flat during the mailing time, safe mailing without causing any damage.

Ultra strong self seal closure - the #10 security envelopes are with strong self seal tape closure to offer a ultra strong sealing performance and keep the inside documents safe, not easy to open or tear even shipped in the most Violent Express, providing the max safety. Value security envelopes package - package includes 250 pcs self seal #10 security envelopes with larger size of 4-1/8 x 9-1/2 Inches which can easily get your large documents, pictures, photos, files, papers or other items organized and shipped safely.

Order now to get 30 days money back and free replacement, feel free to contact us if there is any issue with our security envelopes. Wide used in any occasions - all the security envelopes are with windowless design which allows an easy printing, labeling or hand-addressing, mass business mailings, great choice for standard business, great for quick, legal documents and sensitive correspondence.
BrandXxcxpark #ad
ManufacturerXCX #ad
Part NumberXC-8031B