STYROFOAM R-3, 0.55-in x 4-ft x 8-ft Residential Sheathing Square Edge Faced Polystyrene For Use In Garage Doors Board Insulation Sound Barrier in the Board Insulation department at Lowes.com
Dupont Styrofoam SM Insulation — Form and Build Supply Inc.
Dow Blue SE Styrofoam Insulation Board, R-20, 4 inch 4x8 ft (pallet/24)
2” X 48” X 96” SCORED DOW STYROFOAM BOARD - Insulation
Dow R-10, 2-in x 4-ft x 8-ft Faced Polystyrene Board Insulation in the Board Insulation department at Lowes.com