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A security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text; keeps contents safe from prying eyes, even if held to light.

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.

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.

Easy seal closure: our #8 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.
Premium security check tint envelopes: the interior of our #8 Security envelopes use a dark navy, heavy coverage security tint 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. Double window design: only addresses will show through our unique 2 window. Ideal for quickbooks Check, Documents Secure Mailing. Notice: these #8 double window envelopes are not compatible with quickbooks INVOICES.

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.

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


Protect your check privacy. Strong adhesive: with the strong adhesive flap, valbox #8 double window envelopes will be more evident if tampered. The self-seal feature makes these envelopes much more convenient than regular, moisten-and-seal ones.
Notice: these #8 double window Envelopes Are Not Compatible With QuickBooks Invoices. Double windows design. The checks are easy to slip in. You don't need to stand licking envelopes and using glue or the water activators, which is time consuming and messy. Fits quickbooks checks and other computer printed checks perfectly. Our valbox double window envelopes feature with durable 24lbs white wove paper, peel-off strip, stronger glue and security tint design.

Provides complete check security: your checks will be hidden with our security tint design.

1. Quality Park
#ad
3 5/8 x 8 11/16, 24 lb White, Quality Park #8 Double Window Security Envelopes for QuickBooks Checks, Redi-Strip Self Seal Closure, 500/Box QUA50766
#adQuality Park #ad - Redi-strip peel and seal envelopes let you fly through your mail routine in record time; just peel & press for a durable adhesive seal without applying moisture. Double window envelopes display just the sender & receiver addresses; precise measurements keep check amounts and memo lines out of view.A security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text; keeps contents safe from prying eyes, even if held to light.
More information #ad
Quality park #8 double window envelopes are a perfect fit for QuickBooks & other computer checks; with security tint for privacy & a Redi Strip self seal closure for fast easy mail days; 500 per box. Our no 8 mailing envelopes are a little bit wider and roomier than your standard check envelope; 3 5/8 x 8 11/16 inches wide to more easily fit wider QuickBooks checks & other computer laser checks.Brand | Quality Park #ad |
Manufacturer | TOPS Products #ad |
Height | 3.75 Inches |
Length | 12.13 Inches |
Width | 9.13 Inches |
Part Number | QUA50766 |
Model | QUA50766 |
More information #ad
2. Aimoh
#ad
Not for Invoices, QuickBooks & Quicken Checks, 500 Count30180, 500#8 Double Window Self Seal Security Envelopes, Size 3 5/8 x 8 11/16 Inches, Checks Fit Perfectly, for Business Checks
#adAimoh #ad - Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use. Premium security tint check envelopes: Ultra Secure security tint pattern - Double Window Security Tinted Check Envelopes.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.
More information #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. 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.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Part Number | 30180 |
More information #ad
3. Blue Summit Supplies
#ad
Designed for QuickBooks Checks, Computer Printed Checks, 3 5/8 X 8 11/16 NOT for INVOICES, 500 Self Seal Double Window Security Envelopes
#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.
More information #ad
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 |
More information #ad
4. HERKKA
#ad
3 5/8 X 8 11/16 NOT for INVOICES, 24 LB, #8 Double Window Security Check Envelopes, No.8 Double Window Bussiness Envelopes Designed for QuickBooks Checks, 500 Count, Computer Printed Checks
#adHERKKA #ad - No show of memo, business check, payee line or amount in windows. 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. Perfect for home or office; securely send checks or other confidential documents.Easy seal closure: our #8 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.
More information #ad
500 pack self seal bussiness envelopes:herkka #8 security envelopes are designed with peel & seal closure—no moisture needed and a premium security tint to protect sensitive information and a super strong SELF-SEAL strip. Premium security check tint envelopes: the interior of our #8 Security envelopes use a dark navy, heavy coverage security tint 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. Double window design: only addresses will show through our unique 2 window. Ideal for quickbooks Check, Documents Secure Mailing. Notice: these #8 double window envelopes are not compatible with quickbooks INVOICES.
Brand | HERKKA #ad |
Manufacturer | HERKKA #ad |
Part Number | No8-2Win-Lixing |
More information #ad
5. Prime Business Checks
#ad
Self Adhesive Peel & Seal White, 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, Ultra Security Tinted
#adPrime Business Checks #ad - Premium security: envelopes are made with thick 24 LB. White wove paper, a super adhesive seal and a high-quality security pattern to ensure contents are kept in utmost security. 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.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.
More information #ad
Five hundred count: each box contains a long lasting Five Hundred envelope supply, ideal for business and home office use. 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.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
6. Blue Summit Supplies
#ad
Computer Printed Checks, Designed for QuickBooks Checks, 500 Gummed Double Window Security Check Envelopes, 3 5/8 X 8 11/16, Gummed Flap
#adBlue Summit Supplies #ad - Just moisten or lick the flap and fold it over to create a strong lasting seal: Save money with our strong gummed seal design is quick and easy and is guaranteed to stay sealed NOT SELF SEAL.Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. Provides complete check security: your laser checks will be hidden with our security tint design.
More information #ad
Perfectly fits quickbooks checks, or other computer printed checks: checks will slide in easier with a slightly wider design than the standard 2 window 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, QB Online, or Quicken settings WILL NOT FIT STATEMENTS.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Height | 4.5 Inches |
Length | 8.5 Inches |
Weight | 5.11 Pounds |
Width | 12 Inches |
Part Number | BSS-92588-005 |
More information #ad
7. Amazon Basics
#ad
Amazon Basics #9 Double Window Security Tinted Envelopes, 500 ct, White
#adAmazon Basics #ad - Ideal for 8. 5-by-11-inch computer-generated invoices and statements. 500 standard-size security-tinted #9 double window envelopes.More information #ad
9 envelopes measures 3-7/8 by 8-7/8 inches each. Double windows 3/8-inch from the left to show sender info 2 inches from bottom and recipient info 1/2 inch from bottom.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Height | 0.01 Inches |
Length | 8.88 Inches |
Weight | 0.1 Pounds |
Width | 9.25 Inches |
Part Number | AMZ92W |
Model | AMZ92W |
More information #ad
8. ValBox
#ad
ValBox 500 Count #8 Double Window Envelopes 3 5/8" x 8 11/16" Self Seal Double Window Security Check Envelopes- Security Tint Pattern Designed for Home Office Secure Mailing
#adValBox #ad - No need to worry about opening them easily by others. Fits peachtree checks as well as Quicken and QuickBooks. Security check envelopes. Great self seal envelopes. The windows line up perfectly with return and sender address, without showing the memo or check amount line like other envelopes.Protect your check privacy. Strong adhesive: with the strong adhesive flap, valbox #8 double window envelopes will be more evident if tampered. The self-seal feature makes these envelopes much more convenient than regular, moisten-and-seal ones.
More information #ad
Premium quality. If there's anything make you unhappy or unsatisfied about the products, please do contact us without any hesitation. No show of memo, Payee line or amount in windows. Notice: these #8 double window Envelopes Are Not Compatible With QuickBooks Invoices. Double windows design. The checks are easy to slip in. You don't need to stand licking envelopes and using glue or the water activators, which is time consuming and messy. Fits quickbooks checks and other computer printed checks perfectly. Our valbox double window envelopes feature with durable 24lbs white wove paper, peel-off strip, stronger glue and security tint design.
Brand | ValBox #ad |
Manufacturer | ValBox #ad |
Part Number | VB008 |
Model | VB008 |
More information #ad
9. Blue Summit Supplies
#ad
Designed for Quickbooks Printed Checks, Number 8 Size 3 5/8 Inch x 8 11/16 Inch, 500 No. 8 Flip and Seal Double Window Security Check Envelopes
#adBlue Summit Supplies #ad - Maintains professional look and feel throughout transit with our durable 24 LB white wove envelope paper. 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.Provides complete check security: your checks will be hidden with our security tint design.
More information #ad
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. 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.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 1 Pounds |
Part Number | BSS-92588-012 |
More information #ad
10. Next Day Labels
#ad
Blackbaud Software ETC, Compatible for QuickBooks Checks, Box of 500, #9 Ready-Seal Double Window Security Tinted Check Envelopes, Sage 100 program
#adNext Day Labels #ad - Stop licking envelopes" Just fold the flap, get a quick, secure seal. Fold and seal - Security Tint Inside. Guaranteed to fit all your computer business checks. Box of 500 #9 double window check Envelope, 3-7/8 X 8-7/8. Made in the usa by Next Day Labels TM.More information #ad
Brand | Next Day Labels #ad |
Manufacturer | Next Day Labels #ad |
Weight | 0.01 Pounds |
Part Number | NDL Check Envelopes |
Model | 92664 |
More information #ad