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Interior performance door manufactured with a 60 mm wood-based solid core construction built for professional demands and communal use. The rebated construction is equipped with acoustic seals, strong hinges and locks for cylinders, combinations that allows the door type to be a perfect choice for interior flat entrance use where a re-enforced climate construction enables the door to function as well when placed in climates with different temperatures and humidity each side of the door. The door offering includes classification options for E30 and EI30 fire rating, 35dB sound reduction (Rw 38dB), cold and hot smoke classification, durability performance in heavy to severe duty and climate classification C1 (temp. 3-23 degrees C°).