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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
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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.
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European Standard 20 Groove Outward Opening Interval Ventilating System
3H INC.
Item No. | / |
Size | European standard 20 grooved window |
Application | Office building,House |
Load Bearing | 60KG |
Material | Aluminum alloy,Zinc alloy |
Surface Treatment | Powder coating |
Color | handles' is customized,the other is natural |
Components | Fork handle,Clearance ventilation lever, Stricker, Concealed hinge,Elevating block,Rubber seal |
Function | durable,reliable |
Package | Box |
Specification

Item No. | Item name | Remark |
1 | Fork handle | Optional |
2 | Clearance ventilation lever | / |
3 | Stricker | / |
4 | Concealed hinge | / |
5 | Elevating block | / |
6 | Rubber seal | Material:EPDM |
Product Description
1. The interval ventilating part can achieve the interval ventilating function,when the handle is at 0 degree,it’s locked;when the handle is at 90 degree,it’s interval ventilated;when the handle is at 180 degree,it’s opened.
2. There are various length specification of interval ventilating part aluminum connecting rod can be selected,the length can be chosen 600mm,800mm,1000mm to satisfy the different requirements;using the excellent stamping and riveting process,thus,the products have the excellent stability;
3. The matrix is mainly adopted by the die casting aluminum alloy,zinc alloy and new carbon fiber material with high durability and high bearings,and it’s processed by environmental plating and spraying;
4. About the appearance,there are 32 kinds of standard color for selecting to satisfy the customers’ different requirement;
5. This system is suitable for European standard 20 groove,the interval distance between frame and sash is 11.5mm.
