Top 10 Self Sealing Envelopes for Checks – Business Mailing Envelopes

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1. Prime Business Checks

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For Business Laser Checks, Size 3 5/8 x 8 11/16-24lb NOT for INVOICES, Self Adhesive Peel & Seal White, Ultra Security Tinted, 500 Self Seal QuickBooks Double Window Security Check Envelopes

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Prime Business Checks #ad - Self seal double Window, Security tinted for added privacy and confidentiality. Designed to fit Computer business checks, QuickBooks checks. Premium 24 lb - color: white - Finish: Smooth/Wove. Envelope is ideal for all business, professional and personal correspondence. Peel & seal flap: no water required. Peel strip and fold flap, then press for a quick, secure seal.
BrandPrime Business Checks #ad
ManufacturerPrime Business Checks #ad
Height12 Inches
Length8.69 Inches
Weight4.8 Pounds
Width3.62 Inches
Part NumberPB-92663-500
ModelPB-92663-500

2. Aimoh

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

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Aimoh #ad - 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.

Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use. 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. Premium security tint check envelopes: Ultra Secure security tint pattern - Double Window Security Tinted Check Envelopes.
BrandAimoh #ad
ManufacturerAimoh #ad
Part Number30180

3. Blue Summit Supplies

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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

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Blue Summit Supplies #ad - Just peel and seal for a strong lasting seal. Create professional looking mail with the added security of a single window envelope. You can even stuff smaller #9 or #8 return envelopes to get your invoices paid quicker.

Perfect for mailing invoices, checks, QuickBooks Invoices and checks, billing statements, and other business mail. Our security envelopes will quickly and easily create a strong seal for completely secure 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. Save time quickly stuffing multiple pieces of business mail in our wide and large #10 Security Envelope Design. Provides complete business mail security: your professional business mail will be completely hidden with our dark security tint design.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight6.54 Pounds
Part NumberBSS-92588-004
ModelBSS-92588-004

4. Blue Summit Supplies

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

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Blue Summit Supplies #ad - Provides complete check security: your checks will be hidden with our security tint design. 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.

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. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. 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.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight1 Pounds
Part NumberBSS-92588-012

5. Amazon Basics

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

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Amazon Basics #ad - Ideal for home or office; securely send checks, invoices, or other confidential documents. Measures 4-1/8 by 9-1/2 inches each. 24-pound white woven paper for quality and strength. Interior security tint keeps content private. 500-pack of #10 security envelopes with peel & seal closure—no moisture needed.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Part NumberAMZP5
ModelAMZP5

6. Aimoh

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

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Aimoh #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 larger documents without splitting.

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. 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.

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. 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! Click the Orange Button to order now.
BrandAimoh #ad
ManufacturerAimoh #ad
Height4.25 Inches
Length11.5 Inches
Width10 Inches
Part Number34010-500
Model34010-500

7. Amazon Basics

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White, Amazon Basics #6 3/4 Security Tinted Envelopes with Peel & Seal, 100-Pack

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Amazon Basics #ad - 24-pound white woven paper for quality and strength. Interior security tint keeps content private; windowless design. Ideal for home or office; securely send checks, invoices, or other confidential documents. 100-pack of #6 envelopes with Peel & Seal closure—no moisture needed. Measures 3-5/8 by 6-1/2 inches each.
BrandAmazon Basics #ad
ManufacturerAmazon Basics #ad
Part NumberAMZA25
ModelAMZA25

8. Quality Park

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Quality Park #6 3/4 Security-Tinted Envelopes with Peel & Seal, White – QUA10417, 100-Pack

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Quality Park #ad - 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.

Store more, longer: reid-strip envelopes have a longer shelf-life thanks to the peel able strip that protects your adhesive from dust. Less yuck: we promise you won't miss licking envelopes or crumbly, drippy sponges; complete your mailings, no accessories required. An excellent value: bright white 24-lb paper makes an impression for business mailings and personal correspondence; get 100 3-5/8 x 6-1/2 inch envelopes. Save time with self-stick: quality park #6 3/4 Security Envelopes have a strong peel & stick closure that helps you fly through mailings in record time.
BrandQuality Park #ad
ManufacturerQuality Park #ad
Height2.44 Inches
Length6.63 Inches
Width3.75 Inches
Part NumberQUA10417
ModelQUA10417

9. 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 - 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.

Quickly and easily stuff our wide envelopes with several invoices or business statements. 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. Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight5.27 Pounds
Part NumberBSS-92588-007

10. Next Day Labels

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Sage 100 program, Box of 500, #9 Ready-Seal Double Window Security Tinted Check Envelopes, Compatible for QuickBooks Checks, Blackbaud Software ETC

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Next Day Labels #ad - Fold and seal - Security Tint Inside. Box of 500 #9 double window check Envelope, 3-7/8 X 8-7/8. Stop licking envelopes" Just fold the flap, get a quick, secure seal. Guaranteed to fit all your computer business checks. Made in the usa by Next Day Labels TM.
BrandNext Day Labels #ad
ManufacturerNext Day Labels #ad
Weight0.01 Pounds
Part NumberNDL Check Envelopes
Model92664