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The BUSINESS SOURCE BSN28445 is a 5-inch capacity D-ring view binder built for organizing large volumes of letter-size documents in office and professional environments. The polypropylene cover features a chipboard core for rigidity and includes a clear nonglare overlay on the front, back, and spine, allowing custom inserts to be displayed without glare. Back-mounted slant-D rings hold 25 percent more paper than standard round-ring binders and allow pages to lie flat when the binder is open. A dual-trigger ring mechanism makes opening and closing fast and reliable under daily use.
This binder is suited for office professionals, administrative staff, and field technicians who manage high-volume document sets. The letter-size format accommodates standard 8.5-inch by 11-inch pages. The 5-inch ring capacity makes it appropriate for thick project files, reference manuals, or archival document sets. Inside front and back covers each include a clear storage pocket with a 30-sheet capacity for loose documents, forms, or divider labels.
Designed to hold standard letter-size documents punched for 3-ring binders. Compatible with standard index dividers, sheet protectors, and accessories sized for letter-format 3-ring binder systems.
No tools are required for setup. Load documents by pressing the dual triggers to open the rings, insert punched pages onto the slant-D rings, and release the triggers to close. Store binder upright on a shelf to maintain cover and ring alignment over time. Do not overfill beyond the rated ring capacity, as overfilling can stress the ring mechanism.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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