Owens Corning Foamular 150 Rigid Foam Insulation, 1" T x 48" W x 8' L, R-5 Insulation Value, Scored with a Square Edge - 7791048 | Kuhlman Direct Online Store
Project Panels Formular 1 in. x 2 ft. x 2 ft. Rigid Foam Board Insulation Sheathing PP1 - The Home Depot
Frugal Happy: Giant Foam Box, Part 2 - GreenBuildingAdvisor
Vega Bond Purplecoat Single Component Closed Cell Insulation Spray Foam 29 oz. ( 1 Pack with Gun) 20 Board Feet Coverage at 1 inch thickness - Walmart.com
R-Tech 1 1/2 in x 48 in. x 8 ft. R-5.78 EPS Rigid Foam Board Insulation 320817 - The Home Depot