Woodland Scenics C1173 4in Thick Support Panels (extruded foam, 4pcs) for Terrain Understructure

Support Panels are made of extruded foam and designed to use as a strong but lightweight terrain understructure. They are quick and easy to use.
Cut easily with Hot Wire Foam Cutter, Foam Knife, scissors or hobby knife. Cover with No-News Paper and Plaster Cloth. Just the right width to use with Road Riser to make an elevated road base.
4/pkg
1/16" d x 18" w x 24" l (1.59 mm x 45.7 cm x 61 cm)

Support Panels
See how fast and easy it is to use Support Panels to build lightweight understructure for your layout. Set and cut, that's all there is to it. Add No-News Paper and cover with Plaster Cloth to create a hard shell ready for painting and landscape. Done!
Video