Top 10 Envelopes SELF SEAL Double Window – Business Mailing Envelopes

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1. Amazon Basics

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Double Window, 500-Pack, Amazon Basics #9 Envelopes with Peel & Seal, Security Tinted

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Amazon Basics #ad - Interior security tint keeps content private; securely send checks, invoices, or other confidential documents. 500-count pack of #9 security envelopes with Peel & Seal closure—no moisture needed. Measures 3-7/8 by 8-7/8 inches each. Double window allows sender and recipient addresses to show through. 24-pound white wove paper for quality and strength; ideal for home or office.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Height8.8 Inches
Length1 Inches
Weight5.96 Pounds
Width3.88 Inches
Part Numberamz43
ModelAMZ43

2. ValBox

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ValBox 500 Count #10 Double Window Envelopes 4-1/8x9-1/2" Self Seal Security Envelopes for QuickBooks Invoices, Business Statements and Legal Documents

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ValBox #ad - Premium quality: these #10 double window envelope features with durable 24lbs white wove paper, peel-off strip, stronger glue and security tint design. The detail position for the double windows, ideal for legal and standard business mailings, please refer the size chart on the second photos.

Security invoice envelopes: forget the thin, which fit quickBooks invoices, try our valbox #10 security envelopes, torn easily and see-through envelopes you used in the past, multiple business billing statements and return envelopes perfectly!!! The contents are also easy to slip in. However, if there's anything make you unhappy or unsatisfied, please do contact us without any hesitation. Double windows design: the windows line up perfectly with return and sender address, eliminating the need for hand addressing or printing mailing labels, return documents and more.

You don't need to stand licking envelopes and using glue or the water activators, which is time consuming and messy. The self-seal feature makes these envelopes with windows much more convenient than regular, moisten-and-seal ones. We are confident you would love our valBox invoice envelopes in its quality and price. Great self seal envelopes. Protect your invoice and statement privacy and safety. Notice: this #10 double window envelope is not for QuickBooks Checks!!!
BrandValBox #ad
ManufacturerValBox #ad
Part NumberVB052

3. ACSTEP

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White Envelopes 500 Count, Acko #10 500Pack Double Window Envelopes Quick Seal Closure Envelopes 4 1/8 x 9 1/2,Security Tint Pattern Designed for Home Office Secure Mailing,Letters and Invoices

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ACSTEP #ad - Best security envelopes: #10 double window envelope size 4 1/8 x 9 1/2 designed for home office secure mailing, letters and Invoices, computer business checks perfectly. If you need to send statements, checks, this security envelope window fits for you! Buy with confidence! Click the Orange Button to order now! Privacy and confidentiality are critical for all business and legal transactions, so these security envelopes are meet your standards.

Dual windows are placed in an ideal location for checks. Standard package: the envelopes are 500pcs per box, and invoices every day, packaged by a solid carton box, which can protect the item intact during the delivery. Quick seal closure: 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. Ideal for mass mailing of business documents.

Double window envelopes: it's easily read dual windows for everyday business mailings and postal addresses. It's the perfect choice for small businesses, home offices, and everyday use, #10 Security Envelopes are provided in a 500-envelope pack. You can use business mailing envelopes for sending invoices and checks. Premium security tinted pattern: #10 envelopes are designed with premium security printed design to protect contents and sensitive information, as well as your customer's. Security tinted design and strong self-seal quick seal for the best security envelopes on the market.
BrandACSTEP #ad
ManufacturerAcko #ad
Part NumberAcko - 00065
ModelBrown Cheque size envelop

4. Blue Summit Supplies

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Number 8 Size 3 5/8 Inch x 8 11/16 Inch, 500 No. 8 Flip and Seal Double Window Security Check Envelopes, Designed for Quickbooks Printed Checks

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Blue Summit Supplies #ad - Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Provides complete check security: your checks will be hidden with our security tint design.

Checks amounts and memos will not be visible: Only addresses will show through our unique double window design with no need to change QuickBooks settings. Just flip flap and seal to create a strong lasting seal: Our self seal design is quick and easy and is guaranteed to stay sealed. Perfectly fits quickbooks checks, or other computer printed checks: checks will slide in easier with a slightly wider design than a standard 8 5/8 envelope.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight1 Pounds
Part NumberBSS-92588-012

5. Blue Summit Supplies

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Designed for Quickbooks Invoices and Business Statements with Self Seal Flip Press and Seal Flap -Number 9 Size 3 7/8 Inch X 8 7/8 Inch, 500 No. 9 Flip and Seal Double Window Security Envelopes

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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.

Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Perfectly fits quickbooks invoices and business statements: sender and return address will be visible on your QuickBooks invoices and monthly bills through our unique double window design. Quickly and easily stuff our wide envelopes with several invoices or business statements. Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight5.27 Pounds
Part NumberBSS-92588-007

6. Aimoh

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Not for Invoices, 500 Count30180, 500#8 Double Window Self Seal Security Envelopes, Checks Fit Perfectly, for Business Checks, QuickBooks & Quicken Checks, Size 3 5/8 x 8 11/16 Inches

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Aimoh #ad - Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use. Dual window custom designed for mailing business checks: top window height is 7/8 inch x 3-1/2 inches wide and is positioned 3/8 inch from the left and 2-3/8 inch from the bottom, Bottom Window height is 7/8 inch X 3-1/2 inch wide and is positioned 7/8 inches from the left and 3/4 inches from the bottom.

Premium security tint check envelopes: Ultra Secure security tint pattern - Double Window Security Tinted Check Envelopes. Quick-seal self seal strip: aimoh’s double window Security Tinted Self Seal Check Envelopes uses a premium adhesive peel and seal designed strip to create a strong, secure self-sealing seal.

Perfect secure design: measures perfectly 3 5/8 inch x 8 11/16 inch to prevent checks from sliding and moving unlike others on the market, securing sensitive information to remain hidden even through the two windows.
BrandAimoh #ad
ManufacturerAimoh #ad
Part Number30180

7. Aimoh

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Size 3-7/8 x 8-7/8-24 LB, 500#9 Double Window SELF Seal Security Envelopes, for Invoices, Statements & Documents, Security Tinted, 500 Count 30139

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Aimoh #ad - Double windows; professional, advertising campaigns and many more, eliminating constantly printing and hand writing addresses, Each envelope contains two front windows, easily read double front windows suitable for standard business and legal mailings, a 1-3/16" X 3-1/2" top window positioned 3/8" from the left and 2" from the bottom and the bottom 1" X 4" window is 3/8" from the left and 1/2" from the bottom.

Security tint; forget thin, easily read envelopes these premium #9 Security Envelopes are designed with security tinted wave patterns which easily obscure details, numbers and other data within, perfect for mailing business statements and invoices while protecting sensitive information. Long lasting supply; ideal for everyday business use and professional mass mailings, each box of these premium #9 Security Envelopes provide a super long lasting 500 envelope supply, for the best value on the market! Click the Orange Button to order now.

9 double window quick seal security envelopes; tired of cheap thin, easily torn envelopes? Aimoh's#9 Security Envelopes are the perfect solution, with premium security tint, extra large, easily read dual front windows and super secure quick seal adhesive. Quick seal adhesive; aimoh's #9 envelopes use ultra secure, super secure seal across each envelope’s width that won’t easily open or tear as with cheaper gummed seals, quick seal adhesive to create a full, perfect for larger and thicker documents.
BrandAimoh #ad
ManufacturerAimoh #ad
Height4.1 Inches
Length11.5 Inches
Weight0.01 Pounds
Width9.2 Inches
Part NumberFBA_30139
Model30139

8. Blue Summit Supplies

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3 5/8 X 8 11/16 NOT for INVOICES, 500 Self Seal Double Window Security Envelopes, Designed for QuickBooks Checks, Computer Printed Checks

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Blue Summit Supplies #ad - Perfectly fits quickbooks laser checks, or other computer printed checks: checks will slide in easier with a slightly wider design than the standard two window 8 5/8 envelope.

Provides complete check security: your checks will be hidden with our security tint design. Checks amounts and memos will not be visible: Only addresses will show through our unique 2 window design with no need to change QuickBooks, QB Online, or Quicken settings. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Just peel and seal to create a strong lasting seal: Our self seal design is quick and easy and is guaranteed to stay sealed.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight1 Pounds
Part NumberFBA_BSS-92588-001
ModelFBA_BSS-92588-001

9. Office Elite

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Peel & Seal, 3 7/8" x 8 7/8", Security Tinted, 24 LB, Business Correspondence, #9 Double Window SELF SEAL Security Envelopes, Designed for QuickBooks Invoices, and Legal Documents, 550 Per Box

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Office Elite #ad - Best value: each box comes with 550 envelopes, not the standard 500—50 bonus double window envelopes included with each order! Easy to use: a speed seal flap and ultra-strong adhesive make mailing easy—simply peel the strip away and press the flap down for a permanent seal that won’t rip open or tear while in transit! Maximum protection: our high-quality security pattern and heavy paper stock protect your numbers, data, and correspondence—mail your checks and advertisements with confidence knowing that your sensitive information will remain private.

Premium quality: our window envelopes feature a high-quality security pattern, premium 24 lb.

Ideal for invoices: designed specifically for invoices and legal documents—perfect invoice envelopes for QuickBooks invoices and statements as well as other computer-generated invoices; dual windows placed in an ideal location for invoice address information. Paper, and a superior adhesive seal.
BrandOffice Elite #ad
ManufacturerVesta Home Supply #ad
Height4.3 Inches
Length11.5 Inches
Weight0.01 Pounds
Width10.5 Inches
Part NumberB-13A
ModelB-103A

10. Quality Park

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Quality Park #10 Double-Window Self-Seal Security Envelopes, Invoices, 500 Per Box QUA24559, For Business Statements, 24-lb, 4-1/8" x 9-1/2", White

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Quality Park #ad - Save with self-stick: quality park #10 double-window security envelopes have a fold-away, self-sealing flap that saves you time & money. Formatted for business: double-windows display the sender & receiver addresses; fits invoices & statements from QuickBooks and other standard business software; laser and inkjet printer compatible.

An excellent value: get 500 white wove 4-1/8 inch x 9-1/2 inch #10 envelopes per box at a stock-up price. Haste, not waste: redi-seal envelopes don’t require moisture, seal instantly & won't close and stick before you're ready—that means you won't find ruined samples in the box. Enhanced security: offer the protection clients deserve & protect yourself from liability; a security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text.
BrandQuality Park #ad
ManufacturerQuality Park #ad
Height4.13 Inches
Length14 Inches
Weight6.5 Pounds
Width9.63 Inches
Part Number24559
Model24559