Building the Far Infrared Sauna
Although any size is possible, most common sizes are 4x4 and 4x6. Components needed are Housing/Reflector, reverse of reflector with emitters installed, Ceramic FIR emitter, Emitter with reflector, reverse side of emitter and optional Aluminum wire grate cover. Dimensions of housing reflector combo are 23⅝ inches length, 3⅜ inches width and 3 inches depth.