Electromagnetic Door Closer, Large/Medium/Small
电磁闭门器，大/中/小
- 平滑自动关机，保护门框和门，限制火灾蔓延和建筑物的通风
- 大：85kg
- 主要用于铁，不锈钢门，防火门，65kg至85kg重门
- 保质期两年
- 中：65kg
- 主要用于木门，轻钢门，45kg至65kg重门
- 保质期两年
- 小：35kg
- 主要用于木门，轻钢门，2kg至35kg重门
- 保质期两年
- Smooth automatic shutdown, protect the door frame and door, limiting the spread of fire and the ventilation in the building
- Large: 85kg
- Mainly used for iron, stainless steel door, fire door, 65kg to 85kg heavy door
- Shelf lifespan of two years
- Medium: 65kg
- Mainly used for wooden door, light steel door, 45kg to 65kg heavy door
- Shelf lifespan of two years
- Small: 35kg
- Mainly used for wooden door, light steel door, 2kg to 35kg heavy door
- Shelf lifespan of two years
