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Dual windows are placed in an ideal location for checks. If you need to send statements, and invoices every day, packaged by a solid carton box, checks, this security envelope window fits for you! Buy with confidence! Click the Orange Button to order now!.
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. It's the perfect choice for small businesses, and everyday use, home offices, #10 Security Envelopes are provided in a 500-envelope pack. You can use business mailing envelopes for sending invoices and checks. Quickly sealing 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.

Premium security tinted pattern: #10 security envelopes are designed with a premium security printed design 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.
10 security envelopes: our #10 double window envelopes can easily read dual windows for everyday business mailings and postal addresses. Double window envelope design:envelopes with dual window allows sender and recipient address to show through our unique 2 window, legal mailing, secure envelopes suitable for everyday business, and business billing statements while protecting sensitive contents and information. It's the perfect for secure business mailing, billing statements, invoices, checks, everyday home and other business mail. You can use business mailing envelopes for sending invoices and checks.

Tinted security pattern; perfect for mailing invoices, easily obscuring numbers and data for premium, standard business & legal documents and sensitive correspondence, statements, our #10 Envelopes are printed with a secure tinted pattern, added security compared to other cheap envelopes. Each envelope contains two front windows, a 1" x 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom.

Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker.
Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design. Perfect for mailing invoices, billing statements, checks, quickBooks Invoices, and other business mail. Your return and sender address will line up perfectly.

Long lasting supply; perfect for everyday business use, 500 envelope supply measuring 4-1/8 x 9-1/2, our envelopes are provided as an ultra long lasting, ideal for mass mailing and all business needs! Click the Orange Button to order now.
Double window security envelopes; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, standard business & legal documents, statements, with secure moisture activated gummed seal and tinted security patterns.

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.

Perfect for mailing invoices, checks, billing statements, QuickBooks Invoices, and other business mail. No need to spend time and money stamping, or spending extra money on custom envelopes, adding return labels, just quickly slide in your business mail to create professional looking business mail.

Strong adhesive: with the strong adhesive flap, valbox #10 double window envelopes will be more evident if tampered. The self-seal feature makes these envelopes with windows much more convenient than regular, moisten-and-seal ones.
Notice: this #10 double window envelope is not for QuickBooks Checks!!! Security invoice envelopes: forget the thin, try our valbox #10 security envelopes, torn easily and see-through envelopes you used in the past, which fit QuickBooks invoices, multiple business billing statements and return envelopes perfectly!!! The contents are also easy to slip in. Great self seal envelopes. The detail position for the double windows, ideal for legal and standard business mailings, please refer the size chart on the second photos.

Provides complete business mail security: your business mail will be completely hidden with our dark security tint design.

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.
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.
1. ACSTEP
#ad
White Envelopes 500 Count, Acko #10 500Pack Double Window Envelopes Quickly Self-Seal Envelopes 4 1/8 x 9 1/2,Security Tint Pattern Designed for Home Office Secure Mailing,Letters and Invoices
#adACSTEP #ad - Double window envelopes: it's easily read dual windows for everyday business mailings and postal addresses. Security tinted design and strong self-seal for the best security envelopes on the market. 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.Dual windows are placed in an ideal location for checks. If you need to send statements, and invoices every day, packaged by a solid carton box, checks, this security envelope window fits for you! Buy with confidence! Click the Orange Button to order now!.
More information #ad
Standard package: the envelopes are 500pcs per box, which can protect the item intact during the delivery. Ideal for mass mailing of business documents. Privacy and confidentiality are critical for all business and legal transactions, so these security envelopes are meet your standards. 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. It's the perfect choice for small businesses, and everyday use, home offices, #10 Security Envelopes are provided in a 500-envelope pack. You can use business mailing envelopes for sending invoices and checks. Quickly sealing 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.
Brand | ACSTEP #ad |
Manufacturer | Acko #ad |
Part Number | Acko - 00065 |
Model | Brown Cheque size envelop |
More information #ad
2. HERKKA
#ad
Perfect Size for Multiple Business Statements, 24 LB, Quickbooks Invoices, 500#10 Double Window Security Business Mailing Envelopes, Number 10 Size 4-1/8 x 9-1/2, White, and Return Envelopes
#adHERKKA #ad - Ultra strong easy seal: #10 envelopes are manufactured with ultra 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, is guaranteed to stay sealed with no need for tape or glue sticks. Long lasting supply: each box has 500 envelopes which can meet a long lasting supply, ideal for mass mailing of everyday business tasks! Our envelopes with smooth thick paper, it’s fully compatible with most ink jet and laser printers, can print quick and easily without worry about paper jams .Premium security tinted pattern: #10 security envelopes are designed with a premium security printed design 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.
More information #ad
Click the Orange Button to order now. 10 security envelopes: our #10 double window envelopes can easily read dual windows for everyday business mailings and postal addresses. Double window envelope design:envelopes with dual window allows sender and recipient address to show through our unique 2 window, legal mailing, secure envelopes suitable for everyday business, and business billing statements while protecting sensitive contents and information. It's the perfect for secure business mailing, billing statements, invoices, checks, everyday home and other business mail. You can use business mailing envelopes for sending invoices and checks.
Brand | HERKKA #ad |
Manufacturer | HERKKA #ad |
Part Number | No10-2Win-Lixing |
More information #ad
3. Aimoh
#ad
For Invoices, Size 4-1/8 x 9-1/2 -White, 500 Count 30001, Security Tinted, 24 LB, Statements & Documents, 500 #10 Double Window SELF Seal Security Envelopes, EnveGuard
#adAimoh #ad - 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 for any letter sized and larger documents without splitting. Double window security envelopes; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, statements, standard business & legal documents, with super strong SELF-SEAL strip and tinted security patterns.More information #ad
Long lasting supply; perfect for everyday business use, 500 envelope supply measuring 4-1/8 x 9-1/2, our envelopes are provided as an ultra long lasting, ideal for mass mailing and all business needs! Click the Orange Button to order now. Dual window design; easily read dual windows for everyday business mailings to easily display postal addresses. Tinted security pattern; perfect for mailing invoices, easily obscuring numbers and data for premium, standard business & legal documents and sensitive correspondence, statements, our #10 Envelopes are printed with a secure tinted pattern, added security compared to other cheap envelopes. Each envelope contains two front windows, a 1" x 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Part Number | 30001 |
Model | 30001 |
More information #ad
4. Blue Summit Supplies
#ad
And Return Envelopes -Number 10 Size 4 1/8 X 9 ½ Inch, Quickbooks Invoices, 500 No. 10 Flip and Seal Double Window Security Envelopes, Perfect Size for Multiple Business Statements
#adBlue Summit Supplies #ad - No need to spend time and money stamping, or spending extra money on custom envelopes, adding return labels, just quickly slide in your business mail to create professional looking business mail.Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker.
More information #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. Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design. Perfect for mailing invoices, billing statements, checks, quickBooks Invoices, and other business mail. Your return and sender address will line up perfectly.
Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 0.01 Pounds |
Part Number | BSS-92588-008 |
More information #ad
5. Aimoh
#ad
For Invoices, 500 Count 30101, Statements and Legal Documents, GUMMED Closure, 500#10 Double Window Security Business Mailing Envelopes, Size 4-1/8 x 9-1/2, Security Tinted, White, 24 LB
#adAimoh #ad - Dual window design; easily read dual windows for everyday business mailings to easily display postal addresses. Tinted security pattern; perfect for mailing invoices, our #10 Envelopes are printed with a secure tinted pattern, statements, standard business & legal documents and sensitive correspondence, easily obscuring numbers and data for premium, added security compared to other cheap envelopes.Long lasting supply; perfect for everyday business use, 500 envelope supply measuring 4-1/8 x 9-1/2, our envelopes are provided as an ultra long lasting, ideal for mass mailing and all business needs! Click the Orange Button to order now.
More information #ad
Each envelope contains two front windows, a 1" x 3-1/2" top window positioned 1/2" from the left and 2-1/2" from the bottom and the bottom 1-1/8 X 4" window is 1/2" from the left and 3/4" from the bottom. Double window security envelopes; tired of cheap paper envelopes that can be easily seen through? Our Double Window Security Envelopes are ultra secure and perfect for mailing invoices, standard business & legal documents, statements, with secure moisture activated gummed seal and tinted security patterns.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Height | 4.1 Inches |
Length | 12.2 Inches |
Weight | 6.1 Pounds |
Width | 9.5 Inches |
Part Number | 30101 |
Model | 30101 |
More information #ad
6. Blue Summit Supplies
#ad
3 5/8 X 8 11/16 Not for Invoices, 500 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks, Computer Printed Checks
#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
7. Blue Summit Supplies
#ad
Number 10 Size 4 1/8 X 9 ½ Inch, 500 No. 10 Gummed Double Window Security Envelopes, and Return Envelopes, Perfect Size for Multiple Business Statements, Quickbooks Invoices
#adBlue Summit Supplies #ad - Just moisten or lick and seal for a strong lasting seal. Our cost effective gummed seal design will quickly and easily create a strong seal for completely secure business mail.Perfect for mailing invoices, checks, billing statements, QuickBooks Invoices, and other business mail. No need to spend time and money stamping, or spending extra money on custom envelopes, adding return labels, just quickly slide in your business mail to create professional looking business mail.
More information #ad
Provides complete business mail security: your business mail will be completely hidden with our dark security tint design. Your return and sender address will line up perfectly. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker. Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Height | 4.5 Inches |
Length | 8.5 Inches |
Weight | 0.01 Pounds |
Width | 12 Inches |
Part Number | BSS-92588-006 |
More information #ad
8. ValBox
#ad
Business Statements and Legal Documents, ValBox 500 Count #10 Double Window Envelopes 4-1/8x9-1/2" Self Seal Security Envelopes for QuickBooks Invoices
#adValBox #ad - 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. Protect your invoice and statement privacy. No need to worry about opening them easily by others. If there's anything make you unhappy or unsatisfied about the products, please do contact us without any hesitation.Strong adhesive: with the strong adhesive flap, valbox #10 double window envelopes will be more evident if tampered. The self-seal feature makes these envelopes with windows much more convenient than regular, moisten-and-seal ones.
More information #ad
You don't need to stand licking envelopes and using glue or the water activators, which is time consuming and messy. Premium quality: these #10 double window envelope features with durable 24lbs white wove paper, peel-off strip, stronger glue and security tint design. Notice: this #10 double window envelope is not for QuickBooks Checks!!! Security invoice envelopes: forget the thin, try our valbox #10 security envelopes, torn easily and see-through envelopes you used in the past, which fit QuickBooks invoices, multiple business billing statements and return envelopes perfectly!!! The contents are also easy to slip in. Great self seal envelopes. The detail position for the double windows, ideal for legal and standard business mailings, please refer the size chart on the second photos.
Brand | ValBox #ad |
Manufacturer | ValBox #ad |
Part Number | VB052 |
More information #ad
9. Blue Summit Supplies
#ad
500 No. 10 Self Seal Double Window Security Envelopes, Number 10 Size 4 1/8 Inch X 9 ½ Inch, Quickbooks Invoices, Perfect Size for Multiple Business Statements, and Return Envelopes
#adBlue Summit Supplies #ad - Perfect for mailing invoices, billing statements, QuickBooks Invoices, checks, and other business mail. No need to spend time and money stamping, adding return labels, or spending extra money on custom envelopes, just quickly slide in your business mail to create professional looking business mail.Provides complete business mail security: your business mail will be completely hidden with our dark security tint design.
More information #ad
You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker. Your return and sender address will line up perfectly. Our security envelopes will quickly and easily create a strong seal for completely secure business mail. Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. Just peel and seal for a strong lasting seal.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Height | 4.4 Inches |
Length | 11.9 Inches |
Weight | 6.25 Pounds |
Width | 10.1 Inches |
Part Number | BSS-92588-003 |
Model | 74689 |
More information #ad
10. Aimoh
#ad
500 Count 30139, Size 3-7/8 x 8-7/8-24 LB, Statements & Documents, 500#9 Double Window SELF Seal Security Envelopes, for Invoices, Security Tinted
#adAimoh #ad - Security tint; forget thin, numbers and other data within, easily read envelopes these premium #9 Security Envelopes are designed with security tinted wave patterns which easily obscure details, perfect for mailing business statements and invoices while protecting sensitive information.9 double window quick seal security envelopes; tired of cheap thin, easily torn envelopes? Aimoh's#9 Security Envelopes are the perfect solution, extra large, with premium security tint, easily read dual front windows and super secure quick seal adhesive.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.
More information #ad
Double windows; professional, eliminating constantly printing and hand writing addresses, easily read double front windows suitable for standard business and legal mailings, Each envelope contains two front windows, advertising campaigns and many more, 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. 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.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Height | 4.1 Inches |
Length | 11.5 Inches |
Weight | 0.01 Pounds |
Width | 9.2 Inches |
Part Number | FBA_30139 |
Model | 30139 |
More information #ad