Unlike door locks, crescent locks are specifically designed for PVC and aluminum alloy sliding windows, named for their crescent-shaped bolt. This lock utilizes a spring mechanism to achieve 180° or 360° rotation.
"3H Hardware • Harmony in Diversity" – We anticipate gathering with industry colleagues to explore the boundless possibilities of architectural hardware together! November 5-6, at Booth 202, Hall W1 – We look forward to welcoming you!
3H Hardware Architectural Hardware will seize this visit as an opportunity to continuously intensify technological innovation and intelligent construction, working hand-in-hand with the association to propel the high-quality development of the architectural door and window accessories industry.
Choosing reputable brands often provides more assurance regarding material quality and after-sales service. Although the initial investment might be slightly higher, the durability and reliability offered can prevent the hassle of frequent replacements in the long run.
Deeply understanding and strictly implementing their standard requirements is a wise practice for ensuring building safety at the source and fulfilling safety responsibilities. Equipping every fire door with compliant, high-quality hardware means adding a solid layer of protection to life safety passages.
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European Standard 20 Groove Outward Opening Interval Ventilating System
3H INC.
Product Description
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.
