Munhwa File B840-81 Professional A3 Extra Large Lever Arch Binder 70mm Spine with Heavy-Duty One-Touch Mechanism Made in Korea
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Product Description
Extra-Large A3 Archival Solution with High-Capacity One-Touch Compression for Blueprints and Technical Drawings
The Munhwa File B840-81 A3 Lever Arch Binder is a heavy-duty, professional-grade tool specifically designed for extra-large format documents. Ideal for architectural blueprints, posters, and large financial ledgers, this binder features a premium PP-laminated hardboard for extreme structural rigidity. Its one-touch lever arch mechanism provides powerful compression for up to 600 sheets, while the integrated metal slide rails protect the large bottom surface from friction and wear. It is the ultimate global standard for large-scale document preservation and engineering office management.
- High-Capacity A3 Format Support with a 70mm wide spine, perfectly suited for organizing and protecting large-scale drawings and oversized documents.
- Advanced One-Touch Compression allows you to securely lock down even a full 600-sheet stack with a simple button press, preventing paper sagging.
- Heavy-Duty Metal Slide Rail Protection prevents wear and tear on the bottom edges, ensuring the binder remains durable and professional even on deep shelves.
- Secure Slot-Hole & Finger Ring System featuring rust-resistant plated steel for easy handling and stable, upright storage of large archives.
- Laminated PP Hardboard Construction provides a professional black finish that is moisture-resistant and stands up to the heavy weight of A3 paper.
- 100% Made in Korea quality with a precision concave-convex locking system that ensures perfect ring alignment for snag-free page turning.

Global Shipping
ROAExpo provides Global Shipping to over 130+ Countries worldwide.
All orders are shipped from our Central Logistics Hub, currently operated in South Korea, where ROAExpo directly performs free pre-shipment QQ Inspection (Quality & Quantity Inspection). Additional regional logistics hubs will be expanded globally in the future.
Available Shipping Methods
- Sea Parcel – Most economical option for heavy or bulk orders
- Air Parcel – Balanced option between cost and delivery speed
- EMS – International postal delivery service
- FedEx – Fast express courier service
- UPS – Premium international courier service
Shipping availability and transit time may vary depending on destination country and local regulations.
Shipping Cost Calculation
- Destination Country
- Total Shipment Weight
- Selected Shipping Method
Products from different brands or stores can be combined into one shipment when shipped from the same origin country.
You can combine products from multiple brands or stores in one cart to reach the USD $150 purchase threshold and receive shipping discounts, as long as the products are shipped from the same origin country.
The Final Shipping Cost Before Payment is clearly displayed at checkout. There are No Hidden Fees after payment confirmation.
Shipping Discount Benefits – Global Free Shipping (GFS)
- Orders over USD $150 with total shipping weight under 3kg may qualify for Free Shipping
- If total shipping weight exceeds 3kg, customers may receive up to USD $30 Shipping Discount
- The GFS Coupon (Code: ENJOYGFS-KOR) is automatically issued to eligible members and can be found in the member’s account after login. There is no limit on the number of uses.
- The GFS coupon may be combined with other promotions or coupons
- Eligibility may vary depending on product category, shipping method, and stock availability
Final discounted shipping cost is shown before payment confirmation.
Seasonal shipping promotions are announced on our homepage banners and member emails.
Order Processing & Tracking
All orders undergo free pre-shipment QQ Inspection directly performed by ROAExpo before shipment.
Once shipped, a Tracking Number will be provided to the customer.
Delivery time may vary due to customs clearance, local carrier operations, weather conditions, or public holidays.
Customs & Import Duties
Import duties, taxes, and customs fees may be charged by the destination country and are the responsibility of the customer unless otherwise stated.
Customer Support
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Authentic Products Guarantee
All products sold on ROAExpo are Authentic Products sourced directly from Official Suppliers or manufacturers.
Returns Due to Defect or Shipping Error
If a product arrives damaged, defective, or incorrect, please contact Customer Support within 7 days of delivery and provide photos or videos as evidence.
ROAExpo will review the case and provide appropriate resolution, including replacement or refund when applicable.
Returns for Change of Mind
Due to international shipping and customs regulations, returns for personal reasons may be restricted.
In such cases, the customer may be responsible for all return shipping costs and any applicable customs charges.
Please contact Customer Support before initiating any return shipment.
Refund Processing
Refunds are processed after the returned item is received and inspected, or after the claim is verified.
Refund processing time may vary depending on payment method and financial institutions.
Non-Returnable Items
Certain products may not be eligible for return due to hygiene, safety, or manufacturer restrictions.
Customer Support
???? cs@roaexpo.com
☎️ +82-2-6951-0318 (Available Monday–Friday, 10:00–17:00 KST)
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