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"QUATTRO 0.51" is a high-performance insulated sash that boasts wall-level insulation performance. It has a thermal transmittance of 0.51 W/m²K, allowing for control of solar gain and indoor heat retention according to the season and temperature. Additionally, due to its special structure of four-layered glass, it excels in security performance and also provides excellent sound insulation, blocking approximately 40 dB of noise. Furthermore, it has obtained fire resistance certification, making it usable in fire and quasi-fire zones. 【Features】 ■ Thermal transmittance of 0.51 W/m²K ■ Special structure of four-layered glass ■ Blocks approximately 40 dB of noise ■ Usable in fire and quasi-fire zones ■ Outer frame made of acetylated wood "Akoya" *For more details, please refer to the PDF document or feel free to contact us.

• Security glass and sashes
• Entrance/Exterior Doors

This document introduces the thermal transmittance values of "Quattro 0.51" by performance. Thermal transmittance refers to the measure of how easily heat is transferred from the warm side to the cold side when there is a temperature difference between both sides of components such as walls and windows. It quantifies the amount of heat that passes through 1m² of glass per hour. A smaller value indicates better insulation performance. 【Thermal Transmittance by Performance】 ■ Krypton gas injection specification: Thermal transmittance 0.51 (W/m²K) ■ Argon gas injection specification: Thermal transmittance 0.75 (W/m²K) ■ No gas general multi-layer specification: Thermal transmittance 1.11 (W/m²K) *For more details, please refer to the PDF document or feel free to contact us.

• Entrance/Exterior Doors
• Security glass and 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 sashes
• Entrance/Exterior Doors