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The BUSINESS SOURCE BSN33120 is a 4-inch slant D-ring binder built for high-capacity document storage in office and professional environments. The D-rings are mounted on the back cover, allowing pages to lay flat when the binder is open. No-gap ring construction increases sheet capacity by approximately 25 percent compared to standard round-ring binders. The outer cover is polypropylene over sturdy chipboard backing, giving the binder a rigid structure that holds up to repeated use on shelves and in transit. Office staff, administrative professionals, and supply managers typically keep this binder on hand for large filing and presentation projects.
This binder is suited for general office use where high sheet capacity and a clean presentation are priorities. The nonglare CleanView cover and pocket material resist toner transfer, keeping document surfaces clean. A spine label holder allows for quick identification on a shelf. Two clear interior pockets provide additional storage for loose documents, notes, or inserts. The red color aids in color-coded filing systems common in office and records management workflows.
Designed as a standard-size ring binder accepting 8.5-inch by 11-inch three-hole punched documents, compatible with standard binder inserts, dividers, and sheet protectors.
No tools are required for setup. Insert three-hole punched documents by pressing the ring release mechanism and fanning pages into the rings before closing. Avoid overfilling beyond the rated capacity, as exceeding sheet limits can stress the ring mechanism over time. Store vertically on a shelf for best long-term shape retention.
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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