STYROFOAM R- 1, 0.25-in x 4-ft x 50-ft Dow Protection Board III Faced Foam Garage Door Board Insulation with Sound Barrier in the Board Insulation department at Lowes.com
Styrofoam - Wikipedia
How to Install Foam Board Insulation in Attic | ThePlywood.com in 2023 | Foam insulation board, Insulation board, Insulation
Dow Blue SE Styrofoam Insulation Board, R-15, 3 inch, 4x8 ft (Price/6 Pallet)
Styrofoam™ Brand XPS Insulation
Dow Blue Styrofoam Highload 60, R-15, 3 inch x 2x8 ft (pallet/64)