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Splendoress

#10 Envelopes Letter Size Self Seal | 500 Business Mailing Security Peel and Sealing Envelope | 100% Tinted | no 10 White Windowless Legal Regular Plain Envelops Pack | 4-1/8 x 9-1/2 Inches | 24 LB

  • Based on 8,333 reviews
Condition: New
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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Nov 19
Order within 6 hours and 10 minutes
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Size: 500 Count


Features

  • HIGH QUALITY & BULK PRICING - 24lbs high quality envelopes at a fraction of the price
  • NO NEED TO LICK THE FLAP ANYMORE - Very convenient
  • SELF SEAL ENVELOPE- Just peel and stick 4 1/8 in. x 9 1/2 in size envelop
  • CAN'T SEE THROUGH ENVELOPES - Security printing pattern on the inside prevents from seeing what inside. Windowless envelope
  • LONG LASTING SUPPLY - 500 count per box
  • NDAA Section 889 Compliance Certfication

Brand: Splendoress


Color: White Wove


Closure Type: Self-Seal


Occasion: Everyday Mailing


Material: Paper


Manufacturer: ‎Splendoress


Brand: ‎Splendoress


Item Weight: ‎6.06 pounds


Product Dimensions: ‎11.5 x 10 x 4.25 inches


Item model number: ‎#10 Security Envelopes Windowless


Is Discontinued By Manufacturer: ‎No


Color: ‎White Wove


Closure: ‎Self-Seal


Shape: ‎Rectangular


Material Type: ‎Paper


Number of Items: ‎500


Size: ‎500 Count


Sheet Size: ‎4.125-x-9.5-inch Inches


Paper Weight: ‎24


Manufacturer Part Number: ‎#10 Security Envelopes Windowless


Date First Available: January 3, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Nov 19

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Perfect envelopes!
Size: 500 Count
Perfect great price
Reviewed in the United States on November 4, 2025 by Avid reads
    • Convenient and Professional
Size: 500 Count
I recently purchased the #10 Envelopes Letter Size Self Seal, Business White Security Tinted Peel, and Seal, and I couldn't be more pleased with the quality and convenience they offer. The self-seal feature is a game-changer. No more dealing with messy adhesives or licking envelopes—peel off the protective strip and press to seal. It saves time and ensures a secure closure every time. The robust peel-and-seal mechanism provides confidence that your documents will be safely enclosed. The business white color gives these envelopes a professional and polished look, suitable for various purposes. Whether you're sending out invoices, business correspondence, or personal letters, these envelopes convey a sense of professionalism that will leave a positive impression. The security tint adds an extra layer of confidentiality to your mail. It prevents prying eyes from seeing sensitive information inside, giving you peace of mind when sending confidential documents. This feature is essential for business use, where privacy and security are paramount. The letter size is perfect for standard documents, and the envelopes are well-constructed with a sturdy feel. The paper quality is excellent, balancing durability and a clean, professional appearance. They are also compatible with most printers, making it easy to customize and print addresses directly onto the envelopes. The #10 Envelopes Letter Size Self Seal, Business White Security Tinted Peel, and Seal are a fantastic investment for anyone looking for reliable, convenient, and professional envelopes. The self-seal feature, security tint, and high-quality construction make these envelopes stand out. I highly recommend them for both personal and business use. ... show more
Reviewed in the United States on December 20, 2023 by David B Buie
    • Good buy
Size: 500 Count
Delivered promptly, good quality
Reviewed in the United States on September 21, 2025 by JASmith
    • Dependable
Size: 500 Count
Great product
Reviewed in the United States on October 25, 2025 by Tonia Davis
    • Envelope
Size: 500 Count
Put stuff inside and mail. Works as described 👌
Reviewed in the United States on November 7, 2025 by Patricia Braun
    • Easy usage
Size: 500 Count
I'm a Jehovah's Witness and I write letters because I can't go door to door. It takes me about a year and a half to go through a box. I love these. Fold the letters in 3 and take off the the plastic and boom, lol. These are the best envelopes. ❤️❤️❤️❤️
Reviewed in the United States on October 9, 2025 by Kimberly Young
    • satisfied
Size: 500 Count
I was very satisfied with the purchase. I think it's a good balance of price, quantity, and durability.
Reviewed in the United States on July 19, 2025 by Dianna Karla
    • Nice Envelopes
Size: 500 Count
Ordered them delivered within 2 days, the stick on them is nice.
Reviewed in the United States on September 21, 2025 by Dan Clark

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