The Pendaflex 15421 is designed for high-density archiving where documents need to be retrieved frequently. It distinguishes itself by using DuPont Tyvek® reinforcement along the top corners and bottom gusset. This synthetic material is known for its high strength-to-weight ratio, which helps prevent the common issue of side-walls splitting or blowing out under the pressure of heavy paper loads.
The main body is made of heavy-duty pressboard, providing a rigid structure that stands up well in filing drawers. This unit expands to a full 3.5 inches, which is designed to accommodate approximately 700 sheets of standard paper. Because the body is made of fiber-based pressboard, it is best kept in a dry environment to prevent the material from swelling in high humidity.
- Tyvek strips add significant reinforcement to the most common failure points.
- Precision-cut for Letter Size (8.5" x 11") documents to ensure they stay protected.
- Sold in a 10-box set for consistent organization across large filing projects.
Specifications show that while the gussets are highly durable, the non-reinforced top edges of the pressboard may show some fraying after years of heavy use. When fully loaded, the file is most stable when supported by adjacent folders in a drawer, which helps maintain its shape and prevents the sides from bowing over time.
Summary: A professional-grade archival tool that solves the problem of torn folder sides through the use of synthetic reinforcement.
For a document solution that includes a built-in cover for extra security, consider the ABC life 26-pocket organizer.
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