<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.
HLX20
3H INC.
Item No. | HLX20 |
Size | 18”20”28'' |
Application | Top Hung Windows |
Groove width | 18mm |
Material | Stainless steel 304 |
Thickness | 2.5/3.0mm |
Color | Original |
Friction height | 16.5/18mm |
Loading weight | 35-55kg |
Function | durable,easy-installation,smooth-operation |
Specification

Product Description
1. Apply for top hung windows.
2. Applicable window in max height 1500mm, width from 1100-1200mm..
3. Using excellent stainless steel 304 material.
4. Durable,easy-installation,smooth-operation
Definition:The device that connects the sash and frame so that the window can be opened and closed.
Performance index:
Operating standard:JG/T127-2017.
The difference between opening angle and nominal opening angle is not more than 3 degrees.
Friction stay can reach 10-30N when not tighten.
The maximum of friction stay is not more than 80 N when tighten.
The residual deformation is not more than 2mm under 500N.
Repeatedly open and close 30,000 times, the components don't have obvious damage,and still have using function.
Concealed window hinges are made of stainless-steel mounting plates and steel link arms.Widely used with crank-out & push-out casement windows, crank-out & push-out awning windows, tilt-in hopper windows & transom windows. Freely adjustable,smooth and easy to operate when open and close.
Item No. | HLX20 |
Size | 18”20”28'' |
Application | Top Hung Windows |
Groove width | 18mm |
Material | Stainless steel 304 |
Thickness | 2.5/3.0mm |
Color | Original |
Friction height | 16.5/18mm |
Loading weight | 35-55kg |
Function | durable,easy-installation,smooth-operation |
Specification

Product Description
1. Apply for top hung windows.
2. Applicable window in max height 1500mm, width from 1100-1200mm..
3. Using excellent stainless steel 304 material.
4. Durable,easy-installation,smooth-operation
Definition:The device that connects the sash and frame so that the window can be opened and closed.
Performance index:
Operating standard:JG/T127-2017.
The difference between opening angle and nominal opening angle is not more than 3 degrees.
Friction stay can reach 10-30N when not tighten.
The maximum of friction stay is not more than 80 N when tighten.
The residual deformation is not more than 2mm under 500N.
Repeatedly open and close 30,000 times, the components don't have obvious damage,and still have using function.
Concealed window hinges are made of stainless-steel mounting plates and steel link arms.Widely used with crank-out & push-out casement windows, crank-out & push-out awning windows, tilt-in hopper windows & transom windows. Freely adjustable,smooth and easy to operate when open and close.
