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Easily fits invoices, checks, letters, and more. Our self seal design is quick and easy and is guaranteed to stay sealed with no need for tape or glue sticks.
These envelopes are designed for both Laser and Inkjet Printers. No need to worry about others seeing your documents, our dark black security tint completely hides you mail. Our security #10 Windowless Envelopes perfectly fit standard 8. 5’’ x 11’’ paper sizes and other large documents. Perfect for secure everyday home and business mailing.

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.

Pen security envelopes are fully compatible with most inkjet and laser printers for quick and easy addressing. The bright white paper makes an impression on business mailings and personal correspondence.



1. Top Flight
#ad
24 lb, 500 Count, White Paper, Strip & Seal, Top Flight PSTF10NWT #10 Envelopes, Security Tinted
#adTop Flight #ad - Package weight : 6. 1 lbs. Heavy 24lb white paper - Made In Usa. Country of origin : United States. Package Quantity : 1.More information #ad
Brand | Top Flight #ad |
Manufacturer | Top Flight #ad |
Height | 4.3 Inches |
Length | 11.8 Inches |
Weight | 6 Pounds |
Width | 10 Inches |
Part Number | PSTF10NWT |
Model | PSTF10NWT |
Warranty | #10 |
More information #ad
2. Amazon Basics
#ad
Amazon Basics #10 Security-Tinted Self-Seal Business Letter Envelopes, Peel & Seal Closure, 500-Pack, White
#adAmazon Basics #ad - Includes 500 - 10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing. 10 business letter envelopes for home or office.More information #ad
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.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZP5 |
Model | AMZP5 |
More information #ad
3. Office Depot
#ad
12014, White, Office Depot Clean SealTM Envelopes, Box of 500, 10 4 1/8in. x 9 1/2in.
#adOffice Depot #ad - White business envelopes measure 4-1/8" x 9-1/2". Simply peel and seal - no moisture is required. Durable 2-sided seam construction resists tearing. Have a lot of invitations and letters to send and not much time to do it? Consider these self-seal #10 Office Depot envelopes.More information #ad
Ideal for general mailings. Envelopes are made of crisp 24-lb white wove for a substantial feel. In a fast-paced work environment quicker and simpler is better.Brand | Office Depot #ad |
Manufacturer | Office Depot #ad |
Height | 4.3 Inches |
Length | 9.9 Inches |
Weight | 1.69 Pounds |
Width | 13.25 Inches |
Part Number | ODP77146 |
Model | 77146 |
More information #ad
4. Splendoress
#ad
Self Stick Bulk Envelops, #10 White Letter Businesses Envelopes -500 Peel and Seal Tinted Windowless # 10 Envelope, 500 Self Seal Security Mailing Envelopes, Printer Friendly
#adSplendoress #ad - X 9 1/2 in size envelop. Long lasting supply - 500 count per box. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price. Self seal envelope- just peel and stick 4 1/8 in.More information #ad
Windowless envelope. Can't see through envelopes - Security printing pattern on the inside prevents from seeing what inside. No need to lick the flap anymore - Very convenient.Brand | Splendoress #ad |
Manufacturer | Splendoress #ad |
Height | 4.25 Inches |
Length | 11.5 Inches |
Weight | 6.06 Pounds |
Width | 10 Inches |
Part Number | #10 Security Envelopes Windowless |
Model | #10 Security Envelopes Windowless |
More information #ad
5. Blue Summit Supplies
#ad
Number 10 Size 4 1/8 x 9 ½ Inch 100 Pack, Security Tinted with Printer Friendly Design, 100 No. 10 Self Seal Security Envelopes, Designed for Secure Mailing
#adBlue Summit Supplies #ad - Our printer friendly envelopes with smooth thick paper saves you time and frustration while printing without having to worry about jamming. Provides complete mail security. Just peel and seal to create a strong lasting seal without licking or moistening.Easily fits invoices, checks, letters, and more. 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
Easily print name or logo on our low profile envelope design. Easily store and quickly use our 24 LB white wove envelopes with our 100 count value pack with small package design. These envelopes are designed for both Laser and Inkjet Printers. No need to worry about others seeing your documents, our dark black security tint completely hides you mail. Our security #10 Windowless Envelopes perfectly fit standard 8. 5’’ x 11’’ paper sizes and other large documents. Perfect for secure everyday home and business mailing.
Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Weight | 0.01 Pounds |
Part Number | BSS-92588-015 |
Model | SG_B071R9SBXJ_US |
More information #ad
6. Blue Summit Supplies
#ad
500 No. 10 Self Seal Double Window Security Envelopes, Number 10 Size 4 1/8 Inch X 9 ½ Inch, Perfect Size for Multiple Business Statements, Quickbooks Invoices, and Return Envelopes
#adBlue Summit Supplies #ad - Perfect for mailing invoices, QuickBooks Invoices, checks, billing statements, and other business mail. Your return and sender address will line up perfectly. Just peel and seal for a strong lasting seal.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.
More information #ad
Provides complete business mail security: your business mail will be completely hidden with our dark security tint design. 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 |
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
7. Mr. Pen
#ad
#10 Security Envelopes, Mr. Pen- Security Envelopes #10, No 10 Envelopes., 50 Pack, Envelopes Self Seal, Self Sealing Envelopes, Security Envelopes Peel and Seal, Business Envelopes
#adMr. Pen #ad - Pen #10 envelopes are designed with a strong self-seal adhesive strip to create a complete, super secure seal across each envelope's width that won't easily open or tear.Pen security envelopes are fully compatible with most inkjet and laser printers for quick and easy addressing. The bright white paper makes an impression on business mailings and personal correspondence.
More information #ad
Mr. Pen #10 envelopes are designed with a security tint pattern to protect contents and sensitive information, perfect for secure mailing. Mr. Each security envelope measures 9. 4" x 4. 1". Package includes 50 security envelopes, perfect for everyday business correspondence and mailing tasks! Mr.Brand | Mr. Pen #ad |
Manufacturer | Mr. Pen #ad |
Part Number | NAM50 |
More information #ad
8. Splendoress
#ad
Self Stick Bulk Envelops, #10 Security White Letter Businesses Envelopes -100 Peel and Seal Tinted Windowless # 10 Envelope, Printer Friendly, Mailing Envelopes Self Seal
#adSplendoress #ad - 100 envelope windowless pack - Perfect choice for small businesses, home offices and everyday use. Tinted security pattern - Windowless envelope with a secure, security tint-pattern to protect contents and sensitive information. Laser and inkjet printer compatible - Measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for easy addressing.More information #ad
No need to lick the flap anymore - SELF-SEAL adhesive strip creates a super secure seal across each envelope. High quality & bulk pricing - 24lbs high quality envelopes at a fraction of the price.Brand | Splendoress #ad |
Height | 2.2 Inches |
Length | 9.5 Inches |
Width | 4.12 Inches |
Part Number | Mailing Envelopes - 100 Envelopes |
Model | Mailing Envelopes - 100 Envelopes |
More information #ad
9. Amazon Basics
#ad
White, Amazon Basics Catalog Mailing Envelopes, Peel & Seal, 250-Pack, 10x13 Inch
#adAmazon Basics #ad - 250-pack of #13-1/2 catalog envelopes. Durable 28-pound white woven paper for quality and strength. Measures 10 by 13 inches each. Easy-to-seal peel & Seal closure—no moisture needed. Ideal for mailing catalogs, brochures, booklets, and multi-page documents.More information #ad
Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZA34 |
Model | AMZA34 |
More information #ad
10. Amazon Basics
#ad
250-Pack, 10x13 Inch, Amazon Basics Catalog Mailing Envelopes, Peel & Seal, Brown Kraft
#adAmazon Basics #ad - Easy-to-seal peel & Seal closure—no moisture needed. 250-pack of 10 x 13 inch catalog envelopes. Durable 28-pound brown kraft material provides privacy and strength. Measures 10 by 13 inches each. Ideal for mailing catalogs, brochures, booklets, and multi-page documents.More information #ad
Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZA32 |
Model | AMZA32 |
More information #ad