Red Seal Glazier Practice Questions - Red Seal Glazier Interprovincial (IP) Examination Exam

A glazier reading a commercial drawing sees the symbol 'IGU 6-12-6 Low-E (2)'. What does the '12' indicate?

The total unit thickness in inches The 12 mm air/gas space between the two glass lites The thickness of each glass lite The U-value of the unit

Correct Answer:

The 12 mm air/gas space between the two glass lites

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