<p>the sequential door closer ensures the doors close in the "right order," while the door closer ensures they "close properly." Understanding their differences is key to selecting the right components that meet safety standards while enhancing usability.for reliable door control hardware, consider 3H Hardware</p>
<p>the sequential door closer ensures the doors close in the "right order," while the door closer ensures they "close properly." Understanding their differences is key to selecting the right components that meet safety standards while enhancing usability.for reliable door control hardware, consider 3H Hardware</p>
Aside from choosing the right materials, regular maintenance is essential. Periodically cleaning hardware surfaces to remove salt, dust, and accumulated water can effectively delay rust formation. Additionally, opt for accessories designed with drainage holes or channels to help eliminate water buildup and reduce the risk of corrosion.
This exhibition represents a dual breakthrough for 3H Building Hardware in terms of brand influence and market expansion. It not only strengthens the company’s position in the domestic market but, more importantly, opens the door to the ASEAN market.
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PCQ2501
3H INC.
Item No. | PCQ2501 |
Size | / |
Application | UPVC casement doors |
Center Distance | 25mm |
Material | Zinc alloy+ carbon steel |
Surface Treatment | Zinc plated |
Color | Original |
Components | screws |
Function | durable,easy-installation,smooth-operation |
Specification

Product Description
1. Apply for UPVC inward casement doors and sliding doors.
2. Applicable window height from 1800-2400.
3. Using excellent zinc alloy and carbon steel material.
4. Open lock transmission center distance within 25mm.
5.There are four locking points on the transmission device.
6.We have two lengths for choosing,one is 1680mm long,it is suitable for 1800-2100 high door;the other is 1980mm,it is suitable for 2100-2400mm high door .
Item No. | PCQ2501 |
Size | / |
Application | UPVC casement doors |
Center Distance | 25mm |
Material | Zinc alloy+ carbon steel |
Surface Treatment | Zinc plated |
Color | Original |
Components | screws |
Function | durable,easy-installation,smooth-operation |
Specification

Product Description
1. Apply for UPVC inward casement doors and sliding doors.
2. Applicable window height from 1800-2400.
3. Using excellent zinc alloy and carbon steel material.
4. Open lock transmission center distance within 25mm.
5.There are four locking points on the transmission device.
6.We have two lengths for choosing,one is 1680mm long,it is suitable for 1800-2100 high door;the other is 1980mm,it is suitable for 2100-2400mm high door .
