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JM Open-cell Spray Foam (JM ocSPF)
JM Open-cell spray foam (JM ocSPF) is a low-density, nonstructural insulation that offers a high yield while still providing important air isolation, versatile R-values, excellent acoustical performance. When installed at a thickness of 1 inch, it provides an R-value of 3.8, R-13 at 3.5 inches, and R-19 5.5 inches. JM ocSPF has a wide application temperature range and can be installed as low as 40 degrees Fahrenheit.
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