ENERsign GmbH

ENERsign GmbH is a leading German producer of PHI-certified windows and doors with decades of specialization and experience in this domain. Our products combine seamless aesthetics and technical integration with one of the highest thermal performances available on the marketplace. Our patented ENERsign® primus system is a wood-aluminum window designed to provide the best possible energy efficiency with minimal sight lines and clean overall aesthetics. The surrounding slender frame creates minimal profile views, while the extra deep profile depth provides excellent stability. The frameless window sash design allows for a continuous glass sight line even when fixed and turn-and-tilt elements are combined.