This Johns Manville R-38 Unfaced Fiberglass Batt Insulation measures 24 x 48 inches and covers approximately 72 square feet per package. Designed for attic installations, R-38 provides excellent thermal resistance suitable for colder climates including Denver, CO. Unfaced batts are ideal for layering over existing insulation or installing between joists where a vapor barrier is not required. Item is in like-new condition and appears to be in original box. Internal reference note: U1373. No damage or missing pieces reported.