Thanks to the high vacuum chamber of LandVac , which effectively blocks the sound transmission, LandVac has remarkable acoustic properties against high penetrative medium and low-frequency noises such as traffic and construction noises， much better than that of insulated glass. 

The surface stress and fragmentation test of LandVac conform with the standard of tempered glass with wind pressure resistance up to 7200Pa, fully meeting the requirements of the national standard.

Furthermore, unlike insulated glass, whether it’s mounted horizontally or at an angle, the U-value of LandVac remains constant, which ensures excellent energy-saving effect，especially suitable for skylights, sunroom, daylighting roof, and applications in other special spaces.

By using flexible edge sealing materials, LandVac overcomes the seal failure problem caused by fragile sealing materials especially in the environment with big temperature difference between the inner and outer glass surfaces. Moreover, with the assistance of built-in high efficiency getter material, it can sustain a high level of vacuum for a long time.

CTI testing concludes that the metal sealing material is lead-free, hazard-free, and food-grade safe.