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検索キーワード「insulation r value per inch」に一致する投稿を表示しています

√ r rating insulation for attic 309565-R rating insulation for attic

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What R-value Do I Need?Insulation ratings are measured in R-values per inch of thicknessR-Value is a measure of insulation's ability to resist heat flow Insulation R Value Internachi R rating insulation for attic