The sizes for the panel of Type 5899 wood core access floor are 550*550*33mm. The wood core is made of MDF. The back and surface of the wood core are covered by zinc plated steel sheets. The thickness of the steel sheets is 7mm. The 4 sides of wood core are protected with black plastic strips. The top of the panel is covered with strong wearing resistant PVC tiles which thickness is 3mm. The panel is supported with stringer bolt understructure system. Type 5899 product is of a heavy type for the field of wood core access floor. And it offers better foot feel. It is widely used in high grade classroom, hotel and computer room.