Give the approximate U- value of:
(i)an IGU with low- emissivity glass and dry air space
(ii)an IGU with clear sheets of glass and argon- filled space
(iii)an IGU with clear sheets of glass, low- E coating and argon- filled space

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The Answer of Give the approximate U- value of:
(i)an IGU with low- emissivity glass and dry air space
(ii)an IGU with clear sheets of glass and argon- filled space
(iii)an IGU with clear sheets of glass, low- E coating and argon- filled space

Give the Approximate U- Value Of