Customization Supplier Manufacturer Production of Bonnell Spring Unit for Mattress Product Descriptions
| Product Name | Mattress Inner Spring Unit |
| Material | High Carbon Steel Wire |
| Wire Diameter | 1.8mm-2.4mm |
| Cover Material | Bonnell Spring |
| Topper Material | Bonnell Spring |
| Height | 7-22cm |
| Turns | 4-7Turns |
| Coils Counts | According to the demand of clients |
| MOQ | 100PCS |
| Brand | Yirilom |
| Size | Single/Double/Queen/King/Customized |
| OEM&ODM | Acceptable |
| Packing | Plat Compressed With Wooden |
| Application | For Mattress Factory |
| Bonnell Springs are made of high carbon steel wires which have good performance in tensile strength and hardness. | |
A Bonnell Spring Unit is the classic, oldest type of innerspring system. It consists of hourglass-shaped
steel coils connected into a single unit by helically laced wires (spiral wires) at the top and bottom. This
creates a robust, interconnected grid that provides a firm, traditional feel and strong support.
Despite the rise of pocketed coils, Bonnell systems remain extremely popular for entry-level and mid-range
mattresses due to their cost-effectiveness, durability, and excellent airflow.


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