Plinth feet support the entire cabinet weight, compensate for floor unevenness, and protect the cabinet structure from moisture damage. The material choice—metal or plastic—directly affects load capacity, durability, and long-term stability.
Material Comparison
| Property | Steel | Zinc Alloy | Nylon/Plastic |
| Load capacity per foot | 80-120kg | 40-80kg | 20-40kg |
| Lifespan | 15-20 years | 10-15 years | 5-8 years |
| Moisture resistance | Requires coating | Good | Excellent |
| Temperature resistance | Excellent | Good | Limited to 80°C |
| Cost | Medium | Medium-Low | Low |
Application Recommendations
| Application | Recommended | Reason |
| Heavy kitchen cabinets | Steel | Maximum load capacity |
| Standard residential | Zinc alloy | Good balance of performance and cost |
| Lightweight furniture | Plastic | Adequate for light loads, lowest cost |
| Coastal/high humidity | Steel with coating | Corrosion resistance |
| Budget production runs | Plastic or zinc alloy | Cost-effective |
| Commercial use | Steel | Code compliance and durability |
Steel and zinc alloy plinth feet
Conclusion
Metal plinth feet—particularly steel—offer superior load capacity, durability, and long-term stability for cabinet installations. Plastic feet may suffice for lightweight furniture but lack the structural integrity required for kitchen cabinets and heavy storage applications. Zinc alloy provides a balanced middle ground.
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