Designed to fit snugly between wood framing members with dimensions of 15 inches wide by 47 inches long, Johns Manville's R-20 'Attics & Floors Wood Framing' Unfaced Fiberglass Batt Insulation (R2057JC) is easy to handle and install. It conforms neatly to irregularities in framing, ensuring a tight fit that minimizes thermal bridging and maximizes effectiveness. The R-20 rating indicates high thermal resistance, making it ideal for applications requiring substantial insulation to meet energy code requirements or improve overall building efficiency.
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