• Long-strand pultruded fiberglass makes Zenith doors stronger than aluminum and more durable than wood and vinyl. An Inline Fiberglass lifecycle assessment reveals that fiberglass offers a 38% longer useful life expectancy than vinyl. 
• Zenith’s fiberglass withstands extreme temperatures and high wind loads, expanding and contracting 800% less than vinyl. This reduces air leaks and maintains energy efficiency over years of temperature changes, offering worry-free durability.

• Zenith is the first North American window and door certified under the Living Building Challenge Declare label "Red List Approved". This means it does not contain harmful chemicals. High-quality, low-VOC paints minimize off-gassing, contributing to superior indoor air quality.
• Triple gasket seals and insulating properties prevent mold and mildew growth, maintaining a healthy living environment.
• Forced entry resistance tests assess windows and doors to see how well they restrain, delay, or frustrate forced entry. 

• Zenith windows and doors are a long-term investment that adds value to your home. This ensures they meet future building standards, keeping your home's envelope ahead of the curve.

• High-performance products like Zenith save you money on energy bills. They also give you flexibility for future home upgrades. An efficient building envelope can help optimize modern HVAC solutions such as electric heat pumps. This can help with long-term energy savings and a smaller carbon footprint.

At Alpen, we believe in delivering exceptional value. Our mission is to show that high performance doesn’t require an exorbitant price tag. We aim to make our top-tier windows and doors accessible to a broader audience, ensuring more people can enjoy the benefits of high performance. By expanding our reach, we contribute to a greener, more climate-resilient world.

• Investing in Alpen products means gaining our expertise and support for the long term. Our customer success team offers project expertise, technical proficiency, and readily available resources. 
• Investing in Alpen products means gaining our expertise and support for the long term. Our customer success team offers project expertise, technical proficiency, and readily available resources.   As one of the few American-made passive house-certified window and door providers, we ensure shorter lead times and responsive project timelines, giving you greater control and flexibility for your construction schedule.