Block Board (Lumber Core)
Blockboard is a subsitute for thicker panel plywood. It is made of veneer for face and back and lumber strips for its core.
Some typical sizes and specification of BlockBoard:
Sizes :- 1220mm X 2440mm
Thickness :- 15mm,16mm,18mm,19mm,21mm,24mm
Standard :- JPIC
Grade :- BB/CC
Glue :- MR