______ Insulation Is a Closed-Cell Rigid Foam Board That Uses

question 2

Multiple Choice

______ insulation is a closed-cell rigid foam board that uses a low-conductivity gas (usually an HCFC) to fill the cells.

• A) Polyisocyanurate
• B) Fiberglass
• C) Extruded polystryrene (XPS)
• D) Expanded polystyrene (EPS)

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