Walls are made of 60-mm milled wood. Double-glazed windows and doors. The ceiling, seats, and backrests are made of black alder or aspen. Ceilings are made of insulated elements (60 mm). Steam room and dressing room floors: 28-mm ready-made and finished spruce elements. The set includes a wood burning heater, a 30 l water tank, protective screens, and an insulated chimney. The roof is made of hexagonal bitumen shields or rolled tar paper.