Sunsia Thermal Break Aluminum Double Hung Windows are the ideal choice for traditional and contemporary architectural styles. They feature upper and lower sash that slide vertically past each other in a single frame, to provide the ultimate in ventilation control, allowing you to direct air through the top, bottom, or both sashes together. 

Commercial rated double weather-stripping and exterior sash seal combine to provide exceptional performance. In addition, rubber weather-stripping on the sash provides better thermal insulation by preventing water and air infiltration. These integrated features reduce heating and cooling loads, providing long term energy efficiency and utility savings to property owners. The tilt-in sashes make the window easy to operate and clean.

The Aluminum Duble Hung Window is also available as Single Hung Window - one fixed sash and another sash that slides up and down.

Each column has many different options and customer could combine the way he like to customize his own personalized double glazed windows.

Profiles	6063-T5 high quality thermal break aluminium profile, thickness 1.4-1.6 mm   6063-T5 high quality non-thermal break aluminium profiles, thickness 1.4-1.6 mm
Glass	Double toughened glazing:5mm+12A+5mm (A:Air);5mm+12A+5mm tinted; 5mm+12A+5mm Low-E; 5mm+27A+5mm  Single toughened glazing: 3/4/5/6/8/10/12/15/19/21//6.38/11.76mm  Laminated glazing: 5mm+0.76+5mm, 5mm+0.38+5mm
Hardware	China Top Brand or Germany Brand or Australia Brand
Mesh	Stainless Steel Security Mesh/Diamond Mesh Screen
Finish	Powder coating Anodized Electrophoresis Wood grain Fluorine carbon coating

Window Options
● A range of glazing options to achieve higher thermal performance.
● Internal aluminium insect / fly screens or stainless steel security screens.
● Build in blinds for sun shading function
● Can be in powder coated colors with the color# or sample color customer provided.
● A variety of window style configurations 
Window Performance
 U-value (Differ by glass types):    2.1-5.6 m2·K/W
Water Tightness:                        900 Pa
Wind Load Capacity:                  4500 Pa
Noise Reduction:                        ≤41 db

Doors and Windows Hardware plays an important role in the fenestration system. It affects the performance of the integral window or door,including operability, air & water impermeability, especially the longevity of the product itself. We use TOP Quality hardware from Chinese Top Brand(Kinlong,Hoppo,CMEC) or German Brand(Roto, Siegenia) to ensure our exquisite products have their function 100% be played.

Our service

We provide professional suggestions on Door Solution or Window Solution if you are the first time to purchase Aluminium Windows or Doors. Different regions have different climatic characters, and the treatment on profile or glazing should be different to meet its diversity, it concerns the longevity of windows or doors, and each function of energy absorbing & saving .

Sunsia products have 10 years quality guarantee.