Precut Sauna Finlandia 4 x 7 FPC47 Room size 48'' x 84'' x 84''. Two benches 1"x 4" (3/4" thick) Western Red Cedar for your walls and ceiling. Trim and base boards in matching wood. Finlandia Sauna heater model FLB-60 with built-in controls Stones-50 to 100# (depending on heater size).