R15 3 1/2 in x 15 in x 93 in Johns Manville Formaldehyde-Free Fiberglass Kraft-Faced Insulation
R19 6 1/4 in x 15 1/4 in x 93 in CertainTeed Sustainable Unfaced Insulation
R21 5 1/2 in x 16 in x 96 in CertainTeed Sustainable Faced High Performance Insulation
