ENERsign Primus 101 Operable window

The ENERsign®primus turn-tilt window represents the pinnacle of passive house window technology, blending impeccable energy efficiency with sleek design. Engineered for superior thermal insulation, it features a wood-aluminum construction with an integral frame that minimizes thermal bridging and maximizes visual elegance. With U-values as low as 0.59 W/m²K, it is certified by the Passive House Institute for use in cold climates, ensuring optimal performance in energy retrofits and new high-performance buildings. The window boasts a frameless sash design for uninterrupted sightlines, argon-filled triple glazing, and multiple sealing levels for enhanced sound, heat, and moisture protection. Additionally, its high stability and burglar-resistant features offer both security and durability, making it an ideal choice for contemporary architectural projects seeking energy efficiency without compromising on aesthetics.