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These envelopes can be used for virtually anything you need them for! Just peel and seal to create a strong lasting seal without licking or moistening. Secure. These 3 5/8" x 6 1/2" inch self-sealing envelopes are designed to save your time and money.


Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
These envelopes can be used for virtually anything you need them for! White 20lb stock. Envelopes manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings. These envelopes can easily fit invoices, letters, gift cards, checks, etc. Multi-purpose. 6-3/4 security envelopes.

Save more on bulk supply – stock up & take advantage of best pricing; choose from 250 Pack or 500 Count Box for Home, Wedding, School, Office, Etc. Convenient peel and stick – user friendly design speeds up stuffing & Sending w/ Super Strong Sticker Adhesive Already Applied; No More Gummed Closure.

Convenient peel and stick – user friendly design speeds up stuffing & Sending w/ Super Strong Sticker Adhesive Already Applied; No More Gummed Closure.


Quick-seal closure; aimoh's #6 3-4 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 Smaller & Personal documents.
6 3/4 security envelopes combine durable, printer-compatible paper, a security tinted design and strong self-seal QUICK-SEAL for the best #6 3/4 security self-seal envelopes on the market. 6 3/4 security envelopes are provided in a 300-envelope pack. Premium 24lb paper: manufactured from premium quality 24lb white sturdy paper creating a super high quality feel, perfect for personal greetings and letters. Measuring 3. 625 x 6. 5 inches.

1. Mead
#ad
Press-it Seal-it Security Envelope, 55 Count,3 5/8 in x 6 1/2 in, MEA75030
#adMead #ad - Simply peel the strip, and the envelope instantly seals with no licking. Sold as 55/BX. Press-it seal-it, self-adhesive closure makes sealing the envelopes easy. Mail documents you need to keep private in these no. 6 security envelopes with a lining to shield your information.More information #ad
Brand | Mead #ad |
Manufacturer | Mead #ad |
Height | 4 Inches |
Length | 3 Inches |
Weight | 0.4 Pounds |
Width | 7 Inches |
Part Number | MEA75030 |
Model | MEA75030-SN |
Warranty | kkk |
More information #ad
2. BAZIC Products
#ad
Peel & Seal Mailer for Business Invoice Check 100/Pack, BAZIC Self Seal White Envelope 3 5/8" x 6 1/2" #6, No Window Mailing Envelopes, 1-Pack
#adBAZIC Products #ad - White 20lb stock. 6-3/4 self-seal white envelopes. Perfect for everyday business use, these standard white envelopes are crafted of heavy, durable 20lb paper and securely holds hefty files during transit.These envelopes can be used for virtually anything you need them for! Just peel and seal to create a strong lasting seal without licking or moistening. Secure. These 3 5/8" x 6 1/2" inch self-sealing envelopes are designed to save your time and money.
More information #ad
Helps you fly through mailings in record time. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks. Multi-purpose. These envelopes can easily fit invoices, checks, letters, gift cards, etc. Windowless design. Envelopes manufactured with a windowless front panel for easy printing, perfect for quick, labeling or hand-addressing, mass business mailings.Brand | BAZIC Products #ad |
Manufacturer | BAZIC Products #ad |
Height | 3.72 Inches |
Length | 6.69 Inches |
Width | 1.97 Inches |
Part Number | 572 |
Model | 572 |
More information #ad
3. Office Depot
#ad
Office Depot Security Envelopes, 12026, White, 6 3/4 3 5/8in. x 6 1/2in., Box of 500
#adOffice Depot #ad - Optimal for mailing standard personal checks. Security-tinted inside for privacy and confidentiality. Ideal for business and professional use. Perfect for a variety of applications. Fully gummed flap provides a strong, dependable seal.More information #ad
Brand | Office Depot #ad |
Manufacturer | Office Depot #ad |
Part Number | ODP77108 |
More information #ad
4. BAZIC Products
#ad
1-Pack, No Window Tint Pattern Mailing Envelopes, Office Checks Invoices 55/Pack, BAZIC Security Self Seal Envelope 3 5/8" x 6 1/2" #6, Peel & Seal
#adBAZIC Products #ad - Windowless design. Perfect for everyday business use, these standard white envelopes are crafted of heavy, durable 20lb paper and securely holds hefty files during transit. These 3 5/8" x 6 1/2" inch envelopes are designed with security print to protect contents and sensitive information, perfect for protecting sensitive information from others.Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
More information #ad
Secure. Just peel and seal to create a strong lasting seal without licking or moistening. These envelopes can be used for virtually anything you need them for! White 20lb stock. Envelopes manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings. These envelopes can easily fit invoices, letters, gift cards, checks, etc. Multi-purpose. 6-3/4 security envelopes.
Brand | BAZIC Products #ad |
Manufacturer | BAZIC Products #ad |
Height | 3.72 Inches |
Length | 6.69 Inches |
Weight | 0.4 Pounds |
Width | 1.18 Inches |
Part Number | 5066 |
Model | 5066 |
More information #ad
5. EnDoc
#ad
White 6 1/2 x 3 5/8 Inches Peel and Seal Envelope, Office, or School, 500 Pack, For Home, Business, EnDoc #6 3/4 Security Tinted Self Seal Envelopes
#adEnDoc #ad - Heavy 24lb construction – unbendable white kraft paper stands up to postal Journey; Hard, Fold, Professional Weight Won’t Rip, Tear, Sturdy, Crinkle or Crease.Save more on bulk supply – stock up & take advantage of best pricing; choose from 250 Pack or 500 Count Box for Home, Wedding, School, Office, Etc. Convenient peel and stick – user friendly design speeds up stuffing & Sending w/ Super Strong Sticker Adhesive Already Applied; No More Gummed Closure.
More information #ad
6 3 4 business envelopes – high quality easy close office envelopes are Perfect for Sending Forms, Cards, Invoices, Invitations, Checks, Photos, Memos & Beyond. Standard tinted security – extra thick, opaque material, intricate Security Pattern & No Windows Ensure Utmost Confidentiality for Private Correspondence.Brand | EnDoc #ad |
Manufacturer | EnDoc #ad |
Weight | 4.21 Pounds |
Part Number | ENDOC236 |
More information #ad
6. EnDoc
#ad
White 6 1/2 x 3 5/8 Inches Peel and Seal Envelope, or School, Office, Business, For Home, EnDoc #6 3/4 Security Tinted Self Seal Envelopes, 50 Pack
#adEnDoc #ad - Save more on bulk supply – stock up & take advantage of best pricing; Choose the 50 Count Box for Home, Office, Wedding, School, Etc. Standard tinted security – extra thick, opaque material, intricate Security Pattern & No Windows Ensure Utmost Confidentiality for Private Correspondence.Convenient peel and stick – user friendly design speeds up stuffing & Sending w/ Super Strong Sticker Adhesive Already Applied; No More Gummed Closure.
More information #ad
Heavy 24lb construction – unbendable white kraft paper stands up to postal Journey; Hard, Sturdy, Tear, Professional Weight Won’t Rip, Fold, Crinkle or Crease.6 3 4 business envelopes – high quality easy close office envelopes are Perfect for Sending Forms, Invitations, Checks, Invoices, Cards, Photos, Memos & Beyond.Brand | EnDoc #ad |
Manufacturer | EnDoc #ad |
Part Number | 50PACK |
More information #ad
7. Office Depot
#ad
Office Depot Clean SealTM Security Envelopes, 78185, Box of 100, White, 6 3/4 3 5/8in. x 6 1/2in.
#adOffice Depot #ad - Self-seal security envelopes are ideal for general mailings. These #10 envelopes offer a convenient peel-and-seal design that requires no moisture. Office depot security envelopes can simplify your task.More information #ad
Don't let the thought of licking envelope adhesive ruin your day. Made of crisp 24-lb wove for a substantial feel. Security-tinted inside for privacy and confidentiality. Office depot security envelopes with durable 2-sided seam construction resist tearing.Brand | Office Depot #ad |
Manufacturer | Office Depot #ad |
Part Number | MPA/OD/157 |
More information #ad
8. Aimoh
#ad
300 #6 3/4 Security Tinted Self-Seal Envelopes, 24 LB, 300 Count 34300, EnveGuard, White, No Window, Size 3-5/8 X 6-1/2 Inches
#adAimoh #ad - 6 3/4 security tinted self seal envelopes; want the very best in secure, security-tinted envelopes with a super strong self-seal? Aimoh's No. 300 envelope pack; these envelopes are manufactured with a window-less front panel for the perfect choice for Personal Checks, home offices and everyday use, No.Quick-seal closure; aimoh's #6 3-4 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 Smaller & Personal documents.
More information #ad
Super security tint pattern; #6 3 / 4 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure personal mailing while protecting sensitive information. 6 3/4 security envelopes combine durable, printer-compatible paper, a security tinted design and strong self-seal QUICK-SEAL for the best #6 3/4 security self-seal envelopes on the market. 6 3/4 security envelopes are provided in a 300-envelope pack. Premium 24lb paper: manufactured from premium quality 24lb white sturdy paper creating a super high quality feel, perfect for personal greetings and letters. Measuring 3. 625 x 6. 5 inches.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Part Number | 34300 |
Model | 34300 |
More information #ad
9. Mead
#ad
80 per Box 75212, Confidential, Mead #6-3/4 Security Envelopes, 3-5/8" x 6-1/2", White
#adMead #ad - Made in United States. 6-3/4 size envelopes measure 3-5/8" x 6-1/2". 80 envelopes per box. 20 lb. Paper. Customizable : No. White envelopes with security lining ensure privacy.More information #ad
Brand | Mead #ad |
Manufacturer | ACCO Brands #ad |
Height | 3.75 Inches |
Length | 3 Inches |
Weight | 0.05 Pounds |
Width | 6.63 Inches |
Part Number | 75212 |
Model | 75212 |
Warranty | ... |
More information #ad