Top 10 Left Window Envelopes Self Seal – Business Mailing Envelopes

As an Amazon Associate I earn from qualifying purchases.

1. Amazon Basics

#ad

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

#adAmazon Basics #ad - 10 business letter envelopes with single left address window. Peel-and-seal closure; no moisture needed. Product dimensions: 4-1/8 x 9-1/2 inches. Interior security tint for privacy; securely send checks, invoices, or other confidential documents. Includes 500 #10 envelopes made of 24-pound white woven paper for quality and strength.

Brand	Amazon Basics #ad
Manufacturer	Amazon Basics #ad
Part Number	AMZA26
Model	AMZA26

2. Blue Summit Supplies

#ad

Computer Printed Checks with Strong Peel and Seal Flap, 500 No. 10 Self Seal Single Window Security Envelopes -Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8 X 9 1/2

#adBlue Summit Supplies #ad - Perfect for mailing invoices, billing statements, QuickBooks Invoices and checks, checks, and other business mail. 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. Just peel and seal for a strong lasting seal. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels. Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. Our security envelopes will quickly and easily create a strong seal for completely secure business mail.

Brand	Blue Summit Supplies #ad
Manufacturer	Blue Summit Supplies #ad
Part Number	BSS-92588-004
Model	BSS-92588-004

3. Aimoh

#ad

500 Count 35210, Size 4-1/8 x 9-1/2 Inches, 500#10 Single Left Window SELF Seal Security Envelopes, 24 LB, Super Strong Quick-Seal Self Sealing Closure, Security Tinted

#adAimoh #ad - Security tint pattern; mailing secure documents? our #10 security Envelopes are designed with a security wave pattern on the inside to protect contents, data and numbers from being easily read, unlike other cheap envelopes. Ultra strong quick seal; manufactured with ultra strong, perfect for mailing larger, creating a super strong seal across the width of the envelope for a strong seal that won’t easily tear, quick seal adhesive, thicker documents.

Easy read single window; perfect for bulk mailing, perfect for displaying addresses or business information, each envelope has a premium, easy read 4-1/2 X 1-1/8 poly-window, extra large, positioned 7/8" from the left and 1/2" from the bottom of the envelope, making slow printing and hand addressing a thing of the past. Long lasting supply; ideal for everyday business use, perfect for invoices, each box provides 500 envelopes for a long lasting supply, each measuring 4-1/8 x 9-1/2 inches, statements and many more business uses! Click the Orange Button to order now.

10 single window security envelopes; forget cheap, our #10 security envelopes are premium quality, thin envelopes that allow contents to be easily read, ultra secure envelopes suitable for everyday business and legal mailing while protecting sensitive contents and information.

Brand	Aimoh #ad
Part Number	FBA_35210
Model	FBA_35210

4. Blue Summit Supplies

#ad

Blue Summit Supplies 500#10 Single Window Security Envelopes Flip and Seal, Designed for QuickBooks Invoices and Business Statements, Number 10 Size 4 1/8” X 9 1/2”, 500 Pack

#adBlue Summit Supplies #ad - Save time with our easy to use flip and seal design; with no need for licking or moistening, our self sealing 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 fit inside to get your invoices paid quicker. Perfect for mailing invoices, QuickBooks invoices, billing statements, checks, and other business mail. Create professional looking mail with the added security of a single window envelope. Your business mail recipient address will show through the single window and you can quickly print your return address or add return address labels.

Our dark security tint design provides complete business mail security so your professional business mail will be completely hidden from view during transit. Save time by 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
Part Number	BSS-92588-038
Model	BSS-92588-038

5. HERKKA

#ad

24 LB, Designed for QuickBooks Invoices & Business Statements, 500#10 Single Left Window SELF Seal Security Envelopes, Computer Printed Checks Peel and Seal Flap Number 10 Size 4-1/8 x 9-1/2 Inches

#adHERKKA #ad - Ultra strong easy seal: #10 envelopes are manufactured with ultra selF-SEAL adhesive strip to create a full, ideal for mailing larger documents without splitting, super secure seal across each envelope's width that won't easily open or tear, is guaranteed to stay sealed with no need for tape or glue sticks.

Click the Orange Button to order now. 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 . Easy read single window: thin security of single window envelopes makes the contents easily to read, create a professional looking,  perfect for displaying recipient addresses or business information on the single window. 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 single window security envelopes: our #10 security envelopes are designed with SELF-SEAL strip—no moisture needed and a premium security tint, perfect for secure business and legal mailing, to protect sensitive data and information, invoices, or other confidential documents.

Brand	HERKKA #ad
Manufacturer	HERKKA #ad
Part Number	No10-1Win-Lixing

6. Aimoh

#ad

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

#adAimoh #ad - 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. 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.

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.

Premium security tint check envelopes: Ultra Secure security tint pattern - Double Window Security Tinted Check Envelopes. Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use.

Brand	Aimoh #ad
Manufacturer	Aimoh #ad
Part Number	30180

7. Blue Summit Supplies

#ad

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

#adBlue Summit Supplies #ad - Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design.

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. 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.

Brand	Blue Summit Supplies #ad
Manufacturer	Blue Summit Supplies #ad
Weight	5.27 Pounds
Part Number	BSS-92588-007
Model	BSS-92588-007

8. 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 - Provides complete business mail security: your invoices and statements will be completely hidden with our dark security tint design. 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.

Your return and sender address will line up perfectly. Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. Perfect for mailing invoices, quickBooks Invoices, checks, billing statements, and other business mail.

You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker. 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.

Brand	Blue Summit Supplies #ad
Manufacturer	Blue Summit Supplies #ad
Weight	0.01 Pounds
Part Number	BSS-92588-008

9. Blue Summit Supplies

#ad

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

#adBlue 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. Just peel and seal to create a strong lasting seal: Our self seal design is quick and easy and is guaranteed to stay sealed. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper.

Brand	Blue Summit Supplies #ad
Manufacturer	Blue Summit Supplies #ad
Weight	1 Pounds
Part Number	FBA_BSS-92588-001
Model	FBA_BSS-92588-001

10. Quality Park

#ad

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

#adQuality Park #ad - 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. 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. Security-tinted inside for privacy and confidentiality. Simply raise the lower flap and press to seal.

Brand	Quality Park #ad
Manufacturer	0 #ad
Height	4.1 Inches
Length	14.2 Inches
Weight	6.09 Pounds
Width	9.8 Inches
Part Number	21418
Model	21418