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The BUSINESS SOURCE BSN09975 is a 1-inch capacity round-ring binder designed for everyday document organization in office and school environments. The metal ring mechanism features two triggers for easy one-handed opening and closing, and the rings are back-mounted so pages lie flat when the binder is open. The cover is constructed from polypropylene over a chipboard core, giving it a rigid feel that holds its shape through repeated use. Inside the front and back covers, clear pockets each hold up to 30 loose sheets, providing additional storage for reference pages, inserts, or cover sheets.
This binder is well suited for light-duty filing tasks in office, administrative, and classroom settings. It handles standard letter-size documents and is an economical choice for high-volume binder needs such as training packets, reports, and reference manuals. The exposed rivet construction keeps the ring mechanism securely anchored to the spine.
Designed as a standard letter-size round-ring binder compatible with 8.5 by 11 inch three-hole punched documents and standard binder accessories such as dividers and sheet protectors.
No tools are required for setup. Insert three-hole punched documents by opening the rings using the trigger mechanism. Avoid overfilling beyond the rated ring capacity to prevent ring misalignment or damage to the 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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