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Carstens 4-Inch Heavy Duty 3-Ring Binder - Side Opening, Brick Red, Durable Plastic, Precision No-Gap Rings, Waterproof Cover, No Pockets, Holds 600 US Letter Sheets, BPA-Free, Made in USA (1840-3R)
- Ample Storage Capacity
- Exceptional Durability
- Premium Plastic Construction
- American-Made Excellence
$34.99
Price as of Oct 16, 2026, 7:47 AM UTC. Prices and availability are subject to change. The price shown on Amazon at the time of purchase applies.
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Key features
Ample Storage Capacity
Featuring 4-inch rings, these binders can hold up to 600 pages. Designed for simplicity and efficiency, they have no inside pockets, providing a streamlined, clutter-free organization.
Exceptional Durability
Crafted for long-lasting use, Carstens Heavy Duty 3-Ring Binders feature precision no-gap rings tested for 50,000 opens and closes, ensuring reliable performance and long-lasting durability perfect for professionals and students alike.
Premium Plastic Construction
Made from high-quality, durable BPA/BPF/BPS free polypropylene, these waterproof binders resist bending, folding, scratching and tearing (even in the creases). They're stronger than standard vinyl binders and the hospital-grade smooth surface makes them easy to clean.
American-Made Excellence
Proudly manufactured in the USA of US and imported parts, these binders support local craftsmanship and guarantee superior quality control, reflecting the best of American manufacturing.
Woman-Owned Business
Carstens is a certified WBENC woman-owned business dedicated to producing high-quality office supplies, empowering women entrepreneurs and supporting diversity in the workplace.
Carstens 4-Inch Heavy Duty 3-Ring Binder - Side Opening, Brick Red, Durable Plastic, Precision No-Gap Rings, Waterproof Cover, No Pockets, Holds 600 US Letter Sheets, BPA-Free, Made in USA (1840-3R)
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