About five square meters.
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Whether the insulating glass is filled or not (argon gas) has nothing to do with the area.
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First of all, the role of argon, argon is an inert gas, its heat transfer is worse than air, so filled into the insulating glass can reduce the U value of the insulating glass, increase the insulation of the insulating glass. For LOW-E insulating glass, argon also has the role of protecting LOW-E film.
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Generally small manufacturers of non-coated ordinary insulating glass are not filled with argon. According to the regulations, regular manufacturers must be filled with argon, especially the coating of L0W and E insulating glass, filled with argon and the role of protective film layer.
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Heat screen lowe coating energy-saving insulating glass regardless of the size of the area is filled with argon, to ensure the glass energy-saving effect, protective film layer
The aeration standard of insulating glass is that the spacing between the two layers of glass is generally 8mm, and the test proves that if the spacing of 8mm is completely vacuum, the atmospheric pressure will crush the glass.
Therefore, qualified insulating glass, the interlayer is 8mm thick spacing space must be filled with inert gases argon and krypton. After filling, the test shows that its K value (the limit value of heat transfer coefficient) can be reduced by 5% compared with the vacuum state, which means that the insulation performance is better.