Non-thermal break aluminum casement windows are a type of window that is made from aluminum, without any thermal insulation between the inside and outside sections of the frame. These windows are typically more affordable than thermal break aluminum windows, which have a layer of insulation between the inside and outside sections of the frame. However, they also tend to be less energy-efficient, as they allow more heat to pass through the frame. Aluminum casement windows are a popular choice for modern homes and buildings because they are lightweight, durable, and low-maintenance. They also offer a sleek and streamlined appearance, with narrow frames and large glass panels that allow for plenty of natural light. If you are considering non-thermal break aluminum casement windows for your home or building, it's important to keep in mind that they may not be the most energy-efficient option. You may want to consider other types of windows, such as vinyl or wood, if you are looking for better insulation and energy savings. However, if affordability and low-maintenance are your top priorities, non-thermal break aluminum casement windows may be a good choice for you.