Consists of one piece of float glass and one piece of Low-E Glass, there are tiny spacers to form a gap between two glass plates with a vacuum space 0.2mm. All edges are sealed by frit frame to enclose the space. Insert a tube connected to this space for degassing. Seal the tube after degassed, this panel is formed as a Low-E vacuum glass.


a. Getter
b. Pump tube
c. Low-E Glass
d. Spacer
e. Rear Glass
f. Frit frame

Specification: (mm)
Glass Thickness: 3.2+3.2 ~ 8+8
Vacuum space: 0.2
Max. size: 2500×1500
Min. size: 500×500


Advantages of Low-E Vacuum Glass

  • Window Frame Cost Saving

    thickness is much thinner which can save architectural cost. (Also for narrow window frame design, Vacuum glass is best choice.)

  • Low U value

    significantly reduce power consumption for air conditioning and the pollution and greenhouse gas emissions for a better environmental protection with energy saving and emission reduction.

  • Heat Insulation

    in hot summer, effectively block solar heat and keep interior cool; in cold winter, possess high performance of heat loss insulation, keep interior warm and comfortable.

  • Soundproofing

    vacuum space effectively blocks noise transmission and reaches sound transmission class by 39dB.

  • Long service life

    install getter material inside to maintain vacuum level stable and protect Low-E coating for a long service life.

  • Anti-Dew-Forming

    When outdoor temperature lowers to a certain level, the inner surface of anneal window glass will be dew-forming.
    Dew-forming temperature of Low-E vacuum glass is relatively low, the lowest condensation temperature of Low-E Vacuum Glass about -40ºC without inner dew-forming situation.

Dew-forming temperature of different glass types
(cold side is in the outside of the building)
Glass type U value
Indoor Humidity
(Indoor temp. 20ºC)
60% 70% 80%
Monolithic glass 5.8 8ºC 12ºC 15ºC
Low-E Insulating glass 1.5 -18ºC-8ºC 3ºC
Low-E Vacuum glass 0.9 -50ºC-25ºC -10ºC
Low-E Vacuum Combine Insulating glass 0.8 -65ºC-35ºC -15ºC

Low-E vacuum glass developed by TG TECO which was tested by "CTC China Building Material Test and Certification Center" has reached the highest level of national standards in "Graduation for thermal insulating properties of doors and windows."

Structure of Low-E Vacuum Glass
Application of Low-E Vacuum Glass
  • Construction

    Building windows with thermal insulation and energy-saving properties.

  • Transportation

    windows of cars, trains and ships.

  • Refrigerator

    glass doors of refrigerators, freezers, wine coolers, refrigerated display cabinets.

  • Special project

    interior space in need of sound insulation, such as recording studio and conference room.

Performance Data of Low-E Vacuum Glass Architectural)
The above data is calculated as per "WINDOW7.0" for reference only.
0.2V means vacuum space, 12A mean 12mm air space filled with dry air or argon.
The above coating code PLE means Post-temperable Low-E glass product.