Super high-performance quadruple glass wooden window "Quattro 0.51"

World-class insulation performance as a wooden window! Fireproof certification obtained, making it usable in fireproof and quasi-fireproof areas. Also performs well as soundproof sashes.

The "Quattro 0.51" is a wooden window with top-class thermal insulation performance in the world, boasting a thermal transmittance (U-value) of 0.51 W/m²K. It can control solar gain and prevent indoor heat loss according to the season and temperature, thereby reducing heating and cooling costs as well as energy consumption. 【Features】 ■ Insulation: The U-value of 0.51 provides insulation performance comparable to that of walls, allowing for designs that do not worry about heat loss through windows. ■ Fire resistance: Passes performance tests as a fire protection device with a flame barrier performance of 20 minutes. ■ Soundproofing: Reduces noise by approximately 40 dB (decibels), comparable to windows used in soundproof rooms. ■ Security: Higher security performance than standard sashes due to special structure and quadruple-layered glass. We also offer wooden insulated doors. *For more details, please refer to the PDF document or feel free to contact us.

Security glass and sashesEntrance/Exterior Doors