Characteristic of outward-opening and hung aluminium windows

July 31, 2025
111

Outward- opening and bottom-hung aluminium doors and windows are a type of aluminium alloy doors and windows that combine both outward-opening and bottom-hung opening methods, and they belong to the category of multi-functional doors and windows. The following is a detailed description of its core features and working principle:

Core composition

Material: The main frame material is aluminium alloy. Aluminium alloy features high strength, corrosion resistance, light weight, and long service life. Moreover, its surface can be treated through processes such as spraying and electrophoresis to achieve various colors and textures, making it suitable for different architectural styles.

Glass: Usually paired with insulating glass, tempered glass, etc., it has excellent sound insulation, heat insulation and heat preservation performance. Some can also choose Low-E glass (low- radiation glass) according to requirements to further enhance energy-saving effects.

Main characteristic

Outward-opening function: The window sash opens outward as a whole (similar to a casement window), which is suitable for situations requiring the maximum ventilation area.

The bottom-hung function: The bottom of the window sash tilts inward while the top is fixed (similar to an inward-tilting window), creating a gap for ventilation while also providing protection against rain and wind.

Compound operation: Two modes can be switched through hardware to meet the needs of different scenarios (such as rainy days, night ventilation,etc.).

Core advantage

Ventilation and rain protection: In the suspension mode, the rain is not easy to splash into the room, while maintaining air circulation. When opened outward, it achieves large-scale ventilation.

High security: When opening outward, it is equipped with anti-fall ropes or hinges to prevent the window sash from falling. The opening in the suspended state is relatively small, reducing the risk of children falling.

Save space: The outward opening does not occupy indoor space and is suitable for small-sized apartments or areas such as balconies.

Good sealing performance: It adopts multiple sealing strips, and its thermal insulation performance is superior to that of ordinary sliding windows.

Key parts of the hardware system

Linkage handle: The opening mode (such as swing opening, lower suspension, and lock) is controlled by rotating the angle.

Sliding stay hinge: Supports outward opening and angle adjustment, with strong load-bearing capacity.

Limiter: Prevents the window sash from opening too outward, ensuring safety.

Anti-drop device: Prevents the window sash from accidentally falling off when opening outward.

Applicable scenarios

High-rise buildings: The down-hung mode prevents strong winds from directly blowing the window sash.

In rainy areas: On rainy days, keep the area well-ventilated to prevent water from entering.

Families requiring child safety protection: The lower opening is controllable.

Notes

High installation requirements: Professional construction is needed to ensure the load-bearing capacity and selling performance of the hardware.

Higher cost: More expensive than ordinary sliding windows, but with stronger functionality.

Regular maintenance: Hardware parts need lubrication, and the aging condition of sealing strips needs to be checked.

Summary

The outward-opening and bottom-hung aluminium door and window, through the combination of material and opening method, strikes a balance between ventilation, safety, energy conservation and aesthetics, making it a highly practical choice for doors and windows.