Explore the 120-series windows paired with the Heyun 3HM1tilt and turn window system – Winner of the 12th AT World Architecture Design & Technology · Polaris Award.
Choosing an original manufacturer (OEM factory) is key to ensuring hinge quality. Manufacturers with in-house production capabilities can strictly control the entire process from raw material procurement to final inspection, avoiding inconsistent quality control often associated with subcontracting or rebranding
<p style="margin-left:0.0000pt; margin-right:0.0000pt"><span style="font-family:Calibri; font-size:12.0000pt">Focusing on the theme "High-Performance Door & Window System Solutions," the company showcased cutting-edge innovative products, including:</span><span style="font-family:Calibri; font-size:12.0000pt">U-groove concealed casement window hardware system,</span><span style="font-family:Calibri; font-size:12.0000pt">Electric horizontal sliding window,</span><span style="font-family:Calibri; font-size:12.0000pt">Electric inward casement window,</span><span style="font-family:Calibri; font-size:12.0000pt">JTSM06/07 series lift-and-slide door hardware system,</span><span style="font-family:Calibri; font-size:12.0000pt">3HM1/NXC16 series tilt and turn hardware system</span>.</p> <p style="margin-left:72.0000pt"><!--[if !supportLists]--><!--[endif]--></p>
Regular maintenance is crucial for extending the service life of electric window openers. It is recommended to inspect the motor, wiring, and guide rails every three months, promptly removing dust and debris; avoid overloading; and regularly lubricate mechanical components to ensure smooth window operation.
Although door and window handles are small components, they directly affect daily usage convenience and safety.
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.
