These are .060" Plain Styrene Sheets by Evergreen Scale Models.
Durable, stable and easy to cut for building to any size scale (scale conversion chart printed on package). Great for many scratch modeling needs: -Model Railroading -Architectural Models -Military Models -Industrial Models -Miniatures -Ships and Planes These clean, smooth, white styrene sheets can be bonded and painted. Sealing is not required prior to painting. Create nearly any type of weathering and wood grain appearance. May be combined with wood, metal, plastic and so on.
2 Plain Sheets
Modeling Knife Bonding Solvent Painting Material (if Desired)
Sheet Size: 8" x 21" (203mm x 533mmm) Thickness: .060" (1.5mm)