Double hung window systems are specified where traditional window aesthetics are required alongside the practical performance of modern aluminium framing. The ability to operate both the top and bottom sash independently provides flexible ventilation control — opening the top sash allows warm air to escape at ceiling level while the bottom sash draws cooler air in at occupant level. This makes double hung systems particularly suited to heritage and period buildings, education facilities, aged care environments and architect-designed homes where a traditional window profile is part of the design intent. Hunter Windows supplies and installs double hung window systems from the AWS Elevate range, available across multiple series configurations to suit project scale and performance requirements.
Double hung window systems are commonly specified across:
System selection should account for:
Architectural Double-Hung Window
| Maximum Frame Height* | 1050mm |
| Maximum Panel Width* | 1155mm |
| Maximum Glass Thickness | ≤20mm |
| SHGC Range | 0.2-0.58 |
| Uw Range | 3.6-6.5 |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
ClearVENT™ Sashless Double-Hung Window
| Maximum Frame Height* | 1526mm |
| Maximum Panel Width* | 1210mm |
| Maximum Glass Thickness | ≤6.38mm |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
Commercial Double-Hung Window
| Maximum Frame Height* | 1050mm |
| Maximum Panel Width* | 1155mm |
| Maximum Glass Thickness | ≤7.50mm |
| SHGC Range | 0.29-0.64 |
| Uw Range | 4.9-6.5 |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
Residential Double Hung Window
| Maximum Frame Height* | 1050mm |
| Maximum Panel Width* | 1010mm |
| Maximum Glass Thickness | ≤7.52mm |
| SHGC Range | 0.31-0.74 |
| Uw Range | 4.3-6.2 |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
MAGNUM™ Double Hung Window
| Maximum Frame Height* | 1009mm |
| Maximum Panel Width* | 1090mm |
| Maximum Glass Thickness | ≤20mm |
| SHGC Range | 0.2-0.57 |
| Uw Range | 3.7-6.5 |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
ClearVENT™ Sashless Double Hung Window
| Maximum Frame Height* | 1500mm |
| Maximum Panel Width* | 1210mm |
| Maximum Glass Thickness | ≤6mm |
*Maximum Frame Height and Panel Widths indicated are interdependent and subject to individual site conditions.
Double hung window systems are WERS rated, providing verified U-value and Solar Heat Gain Coefficient (SHGC) data for use in NCC energy compliance calculations and thermal modelling.
Key energy performance factors for specification:
SHGC and U-value ranges for each series are shown in the Available Range section above. For detailed energy performance data and climate zone guidance, see our WERS & Energy Performance and Thermally Broken Frames resource pages.
Double hung window systems integrate across facade, sector and specification decisions:
Double hung windows have two independently operable sashes within a single frame — an upper sash and a lower sash. Each can be opened independently, allowing flexible ventilation control. Opening the top sash allows warm air to escape at ceiling level while opening the bottom sash draws cooler air in at a lower level.
Yes. Double hung windows are the traditional window type most commonly associated with heritage and period architecture. Aluminium double hung systems replicate the profile and operation of traditional timber double hung windows while offering the durability and low maintenance of aluminium framing. Specific profile dimensions and glazing bar requirements should be confirmed against heritage conservation area guidelines.
Double hung windows provide flexible two-level ventilation — top and bottom — which can assist with natural air circulation within a room. Awning and casement windows typically provide greater opening area relative to frame size. The choice between system types is often driven by aesthetic requirements and planning constraints rather than ventilation performance alone.
Single and double glazing is available across most series, with maximum glass thicknesses varying by product. Low-e coatings, laminated glass and acoustic glazing options can be selected to meet thermal, safety or acoustic performance requirements.
Yes. Our team can advise on suitable series and configurations for heritage applications, including profile dimensions and glazing bar options where available. Early engagement is recommended where heritage conservation area guidelines apply. Upload drawings or contact us to discuss your project.
For system selection, heritage application advice or to submit drawings for review, our team is available to assist.
Located on the corner of Brunker Road and Awaba Road Broadmeadow. Centrale consists of 39 apartments across 4 levels and a fantastic rooftop entertaining space, all of which was completed in just under 12 months. The construction of Centrale was a true team effort that saw four Hunter Group companies working together to achieve completion.
Client: GWH
Duration: June 2024 – September 2025
Hunter Windows manufactured, supplied and installed a complete glazing package for ONE Apartments, a dual-tower residential development located in Newcastle West.
The scope incorporated extensive glazing systems across both towers and podium levels, totalling 9,116m³ of glazing and 3,697 individual glass panels.
Key inclusions:
Podium Levels (GF–L3): Shopfronts, sliding and hinged doors, fixed glazing, and awning windows for commercial and residential areas
South Tower (L4–L19 + Roof): Mixture of sliding doors, fixed glazing, hinged doors and awning windows
North Tower (L4–21 + Roof): Mixture of sliding doors, fixed glazing, hinged doors and awning windows
Winter Gardens: Fixed glazing and Safetyline Jalousies
Comprehensive design and compliance processes included:
372 shop drawings prepared to document the project
349 QA ITPs completed to verify installation quality
Water testing completed in conjunction with façade consultant Indesco and third-party testing to ensure design compliance and watertightness
