| Type | Gate, Screen & Storm door |
| Material | Spring Steel Wire |
| Coating | Zinc Plated |
| Brand | National |
| Length | 16 In. |
| Outside Diameter | 1 In. |
| UPC | 00038613176270 |
| Package Quantity | 1 |
| Unit of Measurement | Each |
| Country of Origin | Taiwan, Republic of China |
National catalog model No. 77BC. Zinc-plated heavy-duty spring designed for gates, screen and storm doors, as well as for projects requiring an extra-heavy spring. Looped ends for easy installation. Heavy-gauge spring steel.
- Steel wire spring construction
- 48 Lb. working load
- Zinc plated






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