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Create professional looking mail with the added security of a single window envelope. No need for tape or glue sticks as our strong gummed seal creates a hassle free and safe seal for all your sensitive documents.


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.

Enhanced privacy: security tint with complex pattern makes numbers and text difficult to read, even when held to light.

Simply press flaps together for a secure, strong seal. . Wove finish adds a professional touch. These are not for invoice. Double window: #8 double window check envelopes ideal for Quickbooks Check, Business Check, Documents Secure Mailing.
Payroll checks, business checks and other important documents with confidence. 500 envelopes in each box: our #8 3 5/8 x 8 11/16 envelopes ideal for any document from official business letters to business check. Peel & seal closure: with the peel & seal closure, envelopes do not require licking to seal. They come in boxes of 500, so you can stock up for long-term use. .



Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use.

Maintain a professional look and feel throughout transit with our durable 24 lb white wove envelope paper. Just fold down flap and press to create a strong lasting seal.
1. CheckPrintingSupplies
#ad
ADP Tinted Security, #10 Double Window Envelope
#adCheckPrintingSupplies #ad - Size: #10 4 1/8 x 9 1/2". Security Tinted so the contents remain hidden. Compatible with ADP Payroll Checks. Box of 1, 000 Envelopes. 24# white Wove Paper.More information #ad
Brand | CheckPrintingSupplies #ad |
Manufacturer | CheckPrintingSupplies #ad |
Height | 12 Inches |
Length | 13 Inches |
Weight | 13 Pounds |
Width | 9 Inches |
Part Number | ENV31-99602 |
More information #ad
2. Blue Summit Supplies
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3 7/8 x 8 7/8, Thick Gummed Seal, Return Mail, 500 #9 Single Window Security Envelopes, Designed for Secure Mailing of Payroll Checks, QuickBooks Invoices, and Business Statements
#adBlue Summit Supplies #ad - Perfect for mailing payroll checks, confidential documents, QuickBooks invoices, billing statements, and other business mail. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels.Create professional looking mail with the added security of a single window envelope. No need for tape or glue sticks as our strong gummed seal creates a hassle free and safe seal for all your sensitive documents.
More information #ad
Provides complete business mail security: your professional business mail will be completely hidden with our dark security tint design. Tamper proof design with our hot melt glue adhesive manufacturing process that allows the glue to penetrate the envelope, thus causing the envelope to tear if you open after sealing.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Part Number | BSS-92588-025 |
More information #ad
3. CheckPrintingSupplies
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Tinted Security, Self-Seal #10 Double Window Envelope for ADP Payroll Checks
#adCheckPrintingSupplies #ad - Size: 4 1/8" x 9 1/2" #10 Top window size: 1 5/16 x 3 5/16, 2 1/2 from bottom, location: 4 7/8 from left, bottom window Size: 1 1/8 x 3 3/8, Location: 1 3/8 from Left, 1 3/8 from Bottom. Quantity: 1, 000 Envelopes. Security: Blue tinted to keep contents private. Closure: Self Sealing Latex.More information #ad
Brand | CheckPrintingSupplies #ad |
Manufacturer | CheckPrintingSupplies #ad |
Height | 6 Inches |
Length | 20 Inches |
Width | 10 Inches |
Part Number | ENV31-99602 |
More information #ad
4. Blue Summit Supplies
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Computer Printed Checks, 500 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks, 3 5/8 X 8 11/16 Not for Invoices
#adBlue Summit Supplies #ad - 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.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.
More information #ad
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.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 1 Pounds |
Part Number | FBA_BSS-92588-001 |
Model | FBA_BSS-92588-001 |
More information #ad
5. Quality Park
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QUA67539, White, Reveal-n-Seal Double Window Envelopes, 500 / Box, Quality Park
#adQuality Park #ad - Value packed: boxes of 500 24 lb white wove envelopes let you stock up for monthly payroll and accounts payable mailings. Self-sealing, tamper-evident closure: Reveal-N-Seal envelopes have perforations along the flap to show evidence of tampering.Enhanced privacy: security tint with complex pattern makes numbers and text difficult to read, even when held to light.
More information #ad
Formatted for business: double-windows display sender & receiver addresses for QuickBooks checks and other payroll and accounts payable applications. Dependable patented design: Unique flap folds up and into place for an aggressive seal that won't close prematurely.Brand | Quality Park #ad |
Manufacturer | Quality Park Products #ad |
Height | 3.63 Inches |
Length | 13.8 Inches |
Weight | 5.2 Pounds |
Width | 9 Inches |
Part Number | 67539 |
Model | 67539 |
More information #ad
6. Office Deed
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White Envelope, 3 5/8" x 8 11/16", Office Deed 500 Pack #8 Double Window Check Envelope SELF SEAL Adhesive Tinted Security Envelopes Quickbooks Check, Documents Secure Mailing, Business Check
#adOffice Deed #ad - Our products will the perfect fit for all official purpose with high standard quality. The blue tint pattern makes impossible to see the details of the contents, even when held up to the light. The liner keeps the gum dust-free before use.Simply press flaps together for a secure, strong seal. . Wove finish adds a professional touch. These are not for invoice. Double window: #8 double window check envelopes ideal for Quickbooks Check, Business Check, Documents Secure Mailing.
More information #ad
Quality: our security self seal envelopes made of 24-lb white wove. Privacy: protect confidential client information with our security tinted envelopes. Payroll checks, business checks and other important documents with confidence. 500 envelopes in each box: our #8 3 5/8 x 8 11/16 envelopes ideal for any document from official business letters to business check. Peel & seal closure: with the peel & seal closure, envelopes do not require licking to seal. They come in boxes of 500, so you can stock up for long-term use. .
Brand | Office Deed #ad |
Manufacturer | Office Deed #ad |
Part Number | SSEDW8 |
Model | SSEDW8 |
More information #ad
7. Park Forms USA
#ad
Pack of 500 Envelopes, 3 1/8 x 4 5/8", ABC Coin Payroll Envelope, Brown Kraft
#adPark Forms USA #ad - Security envelope made of tough manila stock. Manila envelope is a payment envelope and pay statement in one. Recipient's address and your preprinted return address show clearly.More information #ad
Size: 3 1/8 x 4 5/8". Confidential envelopes feature security tint and cellophane windows to ensure the privacy of information.Brand | Park Forms USA #ad |
Manufacturer | Abc Check Printing #ad |
Part Number | Abc750 |
Model | Abc750 |
More information #ad
8. Amazon Basics
#ad
Security Tinted, Double Window, 500-Pack, Amazon Basics #9 Envelopes with Peel & Seal
#adAmazon Basics #ad - Measures 3-7/8 by 8-7/8 inches each. 500-count pack of #9 security envelopes with Peel & Seal closure—no moisture needed. Interior security tint keeps content private; securely send checks, invoices, or other confidential documents.More information #ad
24-pound white wove paper for quality and strength; ideal for home or office. Double window allows sender and recipient addresses to show through.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Height | 8.8 Inches |
Length | 1 Inches |
Weight | 5.96 Pounds |
Width | 3.88 Inches |
Part Number | amz43 |
Model | AMZ43 |
More information #ad
9. Prime Business Checks
#ad
500 Self Seal QuickBooks Double Window Security Check Envelopes, for Business Laser Checks, Size 3 5/8 x 8 11/16-24lb NOT for INVOICES, Self Adhesive Peel & Seal White, Ultra Security Tinted
#adPrime Business Checks #ad - Peal and seal flap: just peel and seal to create a strong lasting seal, Our self seal design is quick and easy and is guaranteed to stay sealed throughout transit. Check envelopes: designed to fit quickbooks Laser Checks or any Computer Business Checks, these business envelopes fit checks perfectly, with dual windows displaying essential information without leaking out sensitive details.Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use.
More information #ad
Premium security: envelopes are made with thick 24 LB. Perfect secure design: measures perfectly 3 5/8 inch x 8 11/16 inch to prevent checks from sliding and moving, Address will show perfect through windows, Checks amounts and memos will not be visible. White wove paper, a super adhesive seal and a high-quality security pattern to ensure contents are kept in utmost security.Brand | Prime Business Checks #ad |
Manufacturer | Prime Business Checks #ad |
Height | 12 Inches |
Length | 8.69 Inches |
Weight | 4.8 Pounds |
Width | 3.62 Inches |
Part Number | PB-92663-500 |
Model | PB-92663-500 |
More information #ad
10. Blue Summit Supplies
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And Business Statements, 4 1/8 x 9 1/2 Inches, 500 Ct, 500 Self Seal Number 10 Single Right Window Envelopes, Security Lining, Designed for Secure Mailing of Invoices, Documents
#adBlue Summit Supplies #ad - With no more headaches or bad tastes in your mouth from licking envelopes, our self sealing design is quick, easy, and guaranteed to stay sealed. Our number 10 security envelope is perfect for mailing invoices, billing statements, and other business mail where the address is formatted on the right.Maintain a professional look and feel throughout transit with our durable 24 lb white wove envelope paper. Just fold down flap and press to create a strong lasting seal.
More information #ad
Create professional looking mail with the added security of a single window envelope. Provides complete business mail security; your professional business mail will be completely hidden with our dark security tint design. Your business mail recipient address will show through the single right window, with your return address label added to the top left corner.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Part Number | BSS-92588-032 |
More information #ad