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  1. Batt Insulation R-Value Per Inch + R11-R49 Thickness Chart

  2. R30 Insulation Thickness Guide (Table for All Types)

  3. R30 Insulation Thickness For Different Materials (List) - Airflow …

  4. Insulation R-Value Chart: R-Values Per Inch (For 51 Materials)

  5. Fiberglass Insulation R-value and Thickness Comparisons

  6. R-30 Cathedral EcoBatt Kraft Faced Fiberglass Insulation Batt 23 …

  7. All About Insulation R-Values - The Home Depot