non-metallic building materials wholly or mainly of wood, namely panels, strips, rods and slabs for building purposes; glued hardboard, chipboard and fibreboard; parquet flooring and parquet slabs, wholly or mainly of wood; high pressure laminates for floor coverings; lumber; laminated and non-laminated medium density fibreboard plates, high density fibreboard plates and press boards; non-metal door frames; planks; non-metallic building separating plates; roof shingles; wallboards; paperboards for construction; wood veneer; non-metallic fences; non-metallic window frames; wood strips for use in building and construction; non-metallic doors and door panels