Best Foldersys in 2026

PP cap Envelope/a4hoch with margin perforated case for clear/transparent

Manufacturer: Book

Manufacturer Number: 40106 04

Box of 100 windowless #10 security envelopes with a Redi-Strip peel and seal closure

Security envelopes have a special security tint pattern that obscures what's inside; ideal when you're sending more sensitive material through the mail

Self seal envelopes are quick, easy and more clean and sanitary than gummed envelopes; with a Redi-Strip closure, just peel off the strip and press closed for a secure seal; no moisture needed

✉️ 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

✉️ SUPER SECURITY TINT PATTERN; #10 envelopes designed with a secure, security tint-pattern to protect contents and sensitive information, perfect for ultra-secure mailing

✉️ 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

10 business letter envelopes for home or office

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

Reusable, double prong metal clasp is durable and designed for repeated use and eyelets are reinforced . Great for home, office, school, interoffice or mailing.

Perfect for everyday home and business use, clasp envelopes are made from heavyweight 28 lb. brown Kraft stock to give contents extra protection during mailing, storage and handling.

In addition to the clasp closure, these envelopes have a moisture activated seal with deep gumming on the flap to create a permanent seal.

100 manila letter-size file folders for filing 8-1/2 x 11 inch documents

1/3 cut reinforced, assorted position tabs (left, middle, right) for clear identification

Made of 10% recycled content; 10% post-consumer material

100-Pack of 6 x 9 inch catalog envelopes

Durable 28-pound brown kraft material provides privacy and strength

Easy-to-seal Peel and Seal closure—no moisture needed

100-Pack of 6 envelopes with Peel & Seal closure—no moisture needed

Ideal for home or office; securely send checks, invoices, or other confidential documents

Interior security tint keeps content private; windowless design

300-Pack of #6 envelopes with Peel & Seal closure—no moisture needed

Ideal for home or office; securely send checks, invoices, or other confidential documents

Interior security tint keeps content private

#10 business letter envelopes for personal or professional use

Includes 500 #10 envelopes made of 24-pound standard white woven paper for quality and strength; no tint

Moisture activated gummed closure ensures a secure seal

Mead press it seal it number 10 security envelopes, 45 envelopes per box

White envelopes with self adhesive seal, Security lining for privacy

Size: 4 to 1/8 inches x 9 to 1/2 inches

A4+ POPPER WALLETS: Pack of 5 durable plastic folders with a smart white press-stud closure on the curved flap for keeping documents organised and secure

LARGE CAPACITY: Capable of storing 150 sheets of 80gsm paper and large A4+ / foolscap size allows for storing C4 envelopes (designed for A4 sheets)

EASY ORGANISATION: A4+ popper wallets made from crystal-clear, transparent polypropylene allowing for quick and easy identification of documents inside the folder, with a quality ‘Superline’ finish

SHOWCASE BRANDING. Promote your brand and project a professional image of your company through our highly customizable envelopes.

ELEGANT AND SMOOTH FINISH. It is perfect for simple correspondences, like friendship or love letters, to more complex ones - invoices, invitations, statement of account, certificates, brochure, fliers, and other business documents.

VERSATILE. This can be useful for organizing home paperworks and small craft supplies as well like to-do lists, budget, receipts, coupons, stamps, stickers, paper scraps, etc.

Country Of Origin : United States

Heavy 24Lb White Paper - Made In Usa

Package Weight : 6.1 Lbs

Package contains 30 clear folders, A4 size.

Quality assurance: made of high quality plastic, clear and bright surface, thick and durable, non-toxic and odorless, with professional quality.

Super large capacity: can store up to 200 sheets of A4 paper per folder.

SUPER STRONG CONSTRUCTION – Standard White Envelopes Are Crafted of Heavy, Durable 28lb Paper for Exceptional Rip, Tear & Puncture Resistance

SELF SEALING CLOSURE - makes securing contents quick and easy. Peel off the protective strip and press the flap firmly to create a tight bond that seals the contents safely inside the envelope

HEAVYWEIGHT ENVELOPE SET – Pack of 15 Single Envelopes Accommodates Variety of Small & Large Documents for Home, Office, Business, Legal & More

#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

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

WINDOWLESS DESIGN; envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless front panel for easy printing, labeling or hand-addressing, perfect for quick, mass business mailings

500 PACK SELF SEAL BUSSINESS ENVELOPES：HERKKA #10 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.perfect for home or office; securely send checks, invoices, or other confidential documents.

PREMIUM SECURITY TINT PATTERN: The interior of our #10 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.

PERFECT FOR CHECK PRINTING DESIGN: HERKKA envelopes ideal for standard business & legal documents and sensitive correspondence, manufactured with a windowless blank design allows for easy address printing or labels for mass mailing or to simply keep a bulk supply on hand for your home office. Perfect for quick, mass business mailings.

Security envelopes

Security lining

500-count pack of #9 security envelopes with Peel & Seal closure—no moisture needed

Interior security tint keeps content private; securely send checks, invoices, or other confidential documents

Double window allows sender and recipient addresses to show through

#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. 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

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

100 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. 6 3/4 Security Envelopes are provided in a 100-envelope pack

Color: Black

Size: Letter (9.75 x 1.25 x 13 inches)

Quantity: 12 per pack

Color: Clear

Size: Letter (9.75 x 1.25 x 13 inches)

Quantity: 12 per pack

SAVE TIME WITH SELF-STICK: Quality Park 6 3/4 Security Envelopes have a strong peel & stick closure that helps you fly through mailings in record time

ENHANCED SECURITY: Offer the protection clients deserve & protect yourself from liability; a security tint makes envelopes hard to see through; a security pattern scrambles the appearance of text

LESS YUCK: We promise you won't miss licking envelopes or crumbly, drippy sponges; complete your mailings, no accessories required

Color: Fuchsia Pink

Size: #10 (5.25 x 10 inches)

Quantity: 12 per pack

9x12 KRAFT ENVELOPES; Aimoh’s Catalog Envelopes combine tough 28lb golden kraft paper stock, strong self-sealing SELF-SEAL Closure for the best catalog envelopes on the market, perfect for large documents and all business correspondence

DURABLE MULTI-PURPOSE; Ideal for mailing catalogues, magazines, documents, direct mail, promotional material, brochures and more, Aimoh’s Catalog Envelopes can be easily hand addressed or customized with business information

28LB STOCK; manufactured from tough, durable Construction like 28lb paper stock, the brown kraft material will insure privacy of the envelopes contents, the durable, woven paper extends the tampering resistance of this envelope, standing up to normal postal wear and tear without damage,

100-Pack of No.10-1/2 catalog envelopes

Durable 28-pound white woven paper for quality and strength

Easy-to-seal Peel and Seal closure—no moisture needed

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

Colorful Transparent Envelopes & Large Capacity: 5 assorted colors: transparent blue, green, yellow, purple, and pink (each color with 2). It's easy to organize and distinguish your paper with a different color. The envelope folder size is 13.25 x 9.25 inches, suitable for A4/US letter size files & other small items, holds no less than 200 sheets of paper.

Premium Quality & Waterproof: Durable PP material plastic and waterproof envelope folder with upgraded thickness to prevent tearing for durable using and holding your documents or other items safe.

Design with Hook & Loop Closure and Label Pocket: High-quality translucent document bag with hook & loop closure, easy and convenient to take and store lightweight things, and durable to last long after multiple repeats. Plastic Envelopes have a pocket for labels to distinguish documents easily.

Invitation envelopes; ideal for mailing computer-generated wedding, birthday, or other special event invites

Includes 100 blank A9 envelopes made of 24-pound white woven paper for reliable strength

Holds folded 8-1/2 x 11 inch sheets of paper