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Spring File Cobra with Extra Spine – Built for Maximum Capacity and Durability
For those who need robust, high-capacity document storage, the Spring File Cobra with Extra Spine is your ultimate solution. Designed to accommodate both A4 and Legal size paper (34.5cm x 25.5cm), this file ensures your documents are organized and protected, no matter the load. With its extra-wide spine and durable board thickness options, this file is perfect for professionals managing large volumes of paperwork.
Choose from four sturdy variants, each designed to handle different capacities, ensuring you have the right file for your specific needs.
Extra-Wide Spine (3cm): The wider spine provides increased storage capacity, allowing for efficient stacking and filing, even with bulky documents.
Multiple Board Thickness Options: With four variants offering different levels of thickness, you can select the perfect file based on the amount of paperwork you need to store.
High Sheet Capacity: Designed to hold up to 300 sheets of 70 GSM paper, these files are built for maximum storage, making them ideal for legal documents, contracts, or detailed reports.
Reliable Spring Mechanism: The robust spring clip ensures your documents are secure while allowing for quick and easy access to your papers when needed.
Professional Design: The sleek, high-quality finish of these files complements any workspace, adding a touch of sophistication to your filing system.
| Variant | Board Thickness | Capacity | Size (L x W) | Spine Size |
|---|---|---|---|---|
| No. 200 | 1.0mm (1000 microns) | Fits 250 sheets of 70 GSM paper or more | 34.5cm x 25.5cm | 3cm |
| No. 900 | 1.5mm (1500 microns) | Fits 300 sheets of 70 GSM paper or more | 34.5cm x 25.5cm | 3cm |
| No. 1000 | 1.6mm (1600 microns) | Fits 300 sheets of 70 GSM paper or more | 34.5cm x 25.5cm | 3cm |
| No. 1100 | 2.6mm (2600 microns) | Fits up to 300 sheets of 70 GSM paper | 34.5cm x 25.0cm | 4.4cm (special spine size) |
Heavy-Duty Construction: Made with premium materials, these files are built to last, providing excellent protection for your important documents, even with frequent use.
Expanded Storage: With spine widths up to 4.4cm, you’ll have ample space to store larger projects, legal files, or bulk paperwork, all while keeping your desk or storage area organized.
Flexibility for Every Need: Whether you need to store 250 or 300 sheets, the different thickness options let you choose a file that meets your specific requirements without compromising on durability or style.
Perfect for Professionals: Ideal for lawyers, accountants, and project managers who deal with high volumes of paperwork, the Spring File Cobra with Extra Spine is an essential tool for keeping everything in order.
Upgrade your document organization with the Spring File Cobra with Extra Spine—built for those who demand maximum capacity and long-lasting durability.
Order yours today and enjoy the perfect balance of strength, style, and functionality!
Store in a cool, dry place away from direct sunlight and moisture. Keep flat to prevent warping of paper and cover.
Use a proper pen or pencil for writing. Avoid excessive force on spiral or stapled bindings to ensure longer product life.
Neelgagan products use environmentally responsible paper. Dispose responsibly — paper components are fully recyclable.
Watch usage, quality, and unboxing demonstrations.
Real buyers, real orders — from across India
5.0/5 average · Verified purchases
“Quality is consistent across every single piece. This is what stationery should feel like — solid paper, clean ruling, proper binding.”
Delhi · 2 weeks ago
“Ordered 50 notebooks for our school. Every single one was perfect. Fast dispatch and well-packed. Best bulk stationery supplier.”
Chandigarh · 1 month ago
“Been using Neelgagan products for over 15 years. The quality never drops. Worth every rupee. Highly recommended for all ages.”
Jaipur · 3 weeks ago
What started as a humble business by Late Shri Gulal Chand Gupta has grown into one of India's most recognized stationery brands. With 7 decades of relentless focus on quality, innovation, and affordability — Neelgagan is synonymous with trust in every classroom and office across North India and beyond.
Quality, consistency, and trust — in every page, every time
Each product uses selected paper grades for optimal writing experience — smooth, ink-friendly, and durable.
Over 7 decades of consistent quality have made Neelgagan a household name across India.
Competitive pricing without any compromise on quality. Best price-to-quality ratio in Indian stationery.
Available across 10,000+ retail outlets and delivered directly to your doorstep anywhere in India.
From notebooks and pads to files, labels, and art supplies — the complete stationery ecosystem.
Dedicated bulk pricing for schools, corporates, and distributors. Best-in-class wholesale rates.
Why branded stationery makes the real difference
Every order is carefully packed and dispatched with tracking
Confirmed instantly
You’re hereVerified & packed
Same dayProtective packaging
Within 24hWith live tracking
Day 1–2At your doorstep
4–7 days
“Neelgagan started as a family business in 1951 with a simple conviction: every student and professional deserves reliable, quality stationery at a fair price.”
Neelgagan is a well-known brand of Haryana Traders Pvt. Ltd. which manufactures and markets paper and plastic stationery products across India. What started as a humble business by Late Shri Gulal Chand Gupta has blossomed into a brand that embodies quality, innovation, and user-friendliness — now synonymous with excellence, leading this market across the North of India for over 75 years.
— The Neelgagan Family Haryana Traders Pvt. Ltd. · Since 1951Tag us and get featured · @neelgaganstationery
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)
(MRP incl. of all taxes)