NTK's aluminium double hung windows offer a traditional look to a home with its simplicity. These minimalistic windows allow you to control the airflow in the room through either the top opening, bottom opening or both. Due to the minimalist design, it allows for east cleaning and are low maintenance. The aluminium frame also allows for smooth operation and long term use, as it can withstand the Northern Territory's cyclonic weather. All our products are powder coated in our Holtze workshop using Interpons D2525 colours to support our long term solution windows and doors.