Top 10 Letter Size Envelopes – Business Mailing Envelopes

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1. Mead


Mead #10 Envelopes, 4-1/8" x 9-1/2", 45 per Box 75026, Press-It Seal-It Self Adhesive Closure, White, All-Purpose 20-lb Paper, Security Printed Lining for Privacy

Mead #ad - White envelopes with self adhesive seal, Security lining for privacy. Size: 4 to 1/8 inches x 9 to 1/2 inches. Mead press it seal it number 10 security envelopes, 45 envelopes per box.
BrandMead #ad
ManufacturerACCO Brands #ad
Height4.3 inches
Length9.7 inches
Weight0.02 Pounds
Width1.5 inches
Part Number75026

2. Aimoh


24 LB, EnveGuard, White, No Window, 100 Count 34100, #10 Security Tinted Self-Seal Envelopes, Size 4-1/8 X 9-1/2 Inches

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 for any letter sized and larger documents without splitting.

Enveguard technology; in today's world where our health, privacy and security is so much threatened, at Aimoh we approve only the highest quality products, the team of engineers and developers at Aimoh have researched and developed the EnveGuard Technology and Approval systems, produced from the best and safest material on earth. Super security tint pattern; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing.

100 envelope pack; these envelopes are manufactured with a window-less front panel for the perfect choice for small businesses, home offices and everyday use, #10 Security Envelopes are provided in a 100-envelope pack. Laser and inkjet printer compatible; premium construction measuring 4-1/8 x 9-1/2 inches, fully compatible with most inkjet and laser printers for quick and easy addressing! Click the Orange Button to order now.
BrandAimoh #ad
ManufacturerAimoh #ad
Height2.2 inches
Length9.7 inches
Width4.3 inches
Part Number34100

3. Quality Park


Great for Filing, Storing or Mailing Documents, 28 lb Brown Kraft, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, 100 per Box QUA37890

Quality Park #ad - An excellent value; get 100 classic brown kraft 9x12 envelopes at a stock-up price. Quality park 9x12 clasp envelopes serve double duty for sorting or mailing; heavy-duty kraft envelopes have double prong metal clasps, reinforced eyelets & gummed seals; great for home, office, school.

9 x 12 mailing envelopes are perfect for sending large lay-flat items without folds or creases; perfect for contracts, catalogs, registration packets, 8 x 10 photos and more. These sturdy large envelopes are manufactured from heavyweight 28 lb. Gummed seal envelopes have a thick strip of adhesive activated by moisture; use an envelope moistener for a strong, sanitary seal. Brown kraft envelope stock for extra protection in mailing, storage and handling.
BrandQuality Park #ad
ManufacturerQuality Park #ad
Height3.75 Inches
Length14 Inches
Weight4 pounds
Width9.1 Inches
Part NumberQUA37890



Letter Size 4-1/8 x 9-1/2 Inches, Peel and Seal, NO Window, 24 LB,White, CREGEAR #10 Envelopes Self Seal Security Tinted Envelopes 50Ct for Privacy & Business

CREGEAR #ad - The powerful adhesive strip is a key element in ensuring the safe delivery of important items and information. The envelope also features a windowless design, labeling or handwriting of addresses, allowing for easy printing, making it both convenient and efficient.

Measuring 4-1/8 x 9-1/2 inches, the envelope is made from high-quality 24-pound white woven paper, providing the strength and durability you need. We offer 24-hour customer service and a steady supply, ensuring you have one less thing to worry about. With its advanced security pattern, the CREGEAR #10 envelope is the perfect solution for commercial and legal mailings, providing added protection for sensitive information. Featuring a super-strong self-sealing adhesive strip, the envelope is built to withstand the rigors of transportation without opening or tearing.
BrandCREGEAR #ad
ManufacturerCREGEAR #ad
Height0.01 inches
Length8.66 inches
Width3.9 inches
Part NumberENVELOPES-500-2022

5. Mead


4-1/8" x 9-1/2", Mead #10 Envelopes, Security Printed Lining for Privacy, All-Purpose 20-Ib Paper, 40 Letter Size Envelopes per Box 75214, Gummed Closure, White

Mead #ad - Made in the U. S. A. White envelopes are perfect for home or the office. 10 size envelopes measure 4 1/8" x 9 1/2" for mailing standard letter size documents. 40 envelopes per box. Sfi certified Sourcing. Mead all-purpose 20 lb. Security lining to maintain privacy of documents.
BrandMead #ad
ManufacturerACCO Brands #ad
Height4.3 Inches
Length1.5 Inches
Weight0.44 Pounds
Width9.6 Inches
Part NumberMEA75214

6. Top Flight


Security Tinted, Top Flight PSTF10NWT #10 Envelopes, Strip & Seal, 500 Count, White Paper, 24 lb

Top Flight #ad - Heavy 24lb white paper - Made In Usa. Package weight : 6. 1 lbs. Package Quantity : 1. Country of origin : United States.
BrandTop Flight #ad
ManufacturerTop Flight #ad
Height4.3 inches
Length11.8 inches
Weight6 pounds
Width10 inches
Part NumberPSTF10NWT

7. Splendoress


4-1/8 x 9-1/2 Inches, Quality 24 LB, Number #10 White Windowless Security Tinted Envelope, Self Seal Letter Size, 100 Mailing Envelopes

Splendoress #ad - 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. Tinted security pattern - Windowless envelope with a security tint-pattern to protect contents and sensitive information. High quality & bulk pricing box - 24lbs high-quality #10 envelopes at a fraction of the price. No need to lick the flap anymore - SELF STICK adhesive strip creates a super secure seal across each envelope. 100 number 10 envelopes pack - Perfect choice for small businesses, home offices and everyday office supply usage.
BrandSplendoress #ad
ManufacturerSplendoress #ad
Height2.2 Inches
Length9.5 Inches
Width4.12 Inches
Part NumberMailing Envelopes - 100 Envelopes
ModelMailing Envelopes - 100 Envelopes

8. Amazon Basics


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

Amazon Basics #ad - Includes 500 - 10 envelopes made of 24-pound white woven paper; smooth surface works well for direct printing. Interior security tint for privacy; securely send checks, invoices, or other confidential documents. 10 business letter envelopes for home or office. Peel-and-seal closure; no moisture needed. Product dimensions: 12. 2 x 9. 9 x 4. 5 inch.
BrandAmazon Basics #ad
ManufacturerAmazon #ad
Height4.5 inches
Length12.2 inches
Weight6.47 Pounds
Width9.9 inches
Part NumberAMZP5

9. Mead


9" X 12", Brown Manila Kraft Envelope, All-Purpose 32-lb Paper, 100 per Pack CO790, Clasp Closure, Mead Letter Size Mailing Envelopes

Mead #ad - Extra heavy-duty opaque 32 lb. 9 x 12 inches; 100 envelopes per box. Durable multi-purpose envelope; dual purpose seal allows for multiple uses; use the moisture activated gummed seal for mailing or the strong metal clasp for repeated use and storage purposes. Brown kraft material provides privacy of contents.
BrandMead #ad
ManufacturerMead #ad
Height0.1 inches
Length12 inches
Width9 inches
Part NumberCO790m

10. Aimoh


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

Aimoh #ad - 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. 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!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.

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.

Windowless design; envelopes ideal for standard business & legal documents and sensitive correspondence, labeling or hand-addressing, manufactured with a windowless front panel for easy printing, perfect for quick, mass business mailings.
BrandAimoh #ad
ManufacturerAimoh #ad
Height4.25 inches
Length11.5 inches
Width10 inches
Part Number34010-500