Abstract: The elevator car includes a floor, a ceiling, and side walls connecting the floor and the ceiling. At least the inner surface of at least some of the side walls of the elevator car may be covered with sheets of board. The board includes a fire retardant plywood having a front surface and an opposite back surface. The front surface of the fire retardant plywood may be coated with a first material layer including a fire retardant laminate. The fire retardant laminate may be attached with heat resistant or fire retardant glue to the fire retardant plywood. The back surface of the fire retardant plywood may be coated with a second material layer having a same thickness and a same material properties as the laminate.

Abstract: The elevator car comprises a floor and a ceiling as well as side walls connecting the floor and the ceiling. At least the inner surface of at least some of the side walls of the elevator car is covered with sheets of board. The board comprises a fire retardant plywood having a front surface and an opposite back surface. The front surface of the fire retardant plywood is coated with a first material layer comprising a fire retardant laminate. The fire retardant laminate is attached with heat resistant or fire retardant glue to the fire retardant plywood. The back surface of the fire retardant plywood is coated with a second material layer having the same thickness and the same material properties as the laminate.