Saunum's patented air blending system draws heat and steam from near the ceiling, mixes it with cooler, more oxygenated air near the floor, then directs more comfortable, breathable steam throughout the room. This equalizes room temperature by more than 60% for a significantly better sauna experience. You'll enjoy longer, more satisfying sauna sessions with more intense sweating. All sauna bathers have experienced the same issue - extreme variance in temperature and oxygen from the ceiling to the floor. The temperature at the ceiling can often exceed 200 degrees F, while at the floor it will be under 100 degrees F, causing your feet to feel uncomfortably cool and your head to be too hot. The temperature and oxygen level should be more consistent throughout. This revolutionary sauna heater includes an ingenious climate equalizing system that more evenly balances the temperature and oxygen levels throughout your sauna for softer, more breathable air. Air Mixing Technology - Saunum patented air blending system mixes cold oxygen-rich air from the floor with hot oxygen-poor air off the ceiling to solve the discomfort so many associate with sauna. Whether you like it extremely hot, or just warm, Saunum delivers both in a way that heat and oxygen are felt head to toe. European Design - With an elegant black steel finish, Saunum combines Scandinavian design and quality materials. Massive Stone Capacity - Stones are the heart of a Nordic sauna. Ample stones result in softer, more even heat, and can produce more luxurious steam. Large 154 pound stone capacity (required 5 boxes sold separately). Dry your Sauna - Go ahead, toss water onto the rocks! Saunum is engineered for water-tossing, and when you're done enjoying the steam, the patented fan system will conveniently help dry your sauna. For sauna rooms from 177 to 282 cu. ft. Nordic Black Metal Stone Basket Heating Element Air Tunnels (3) Stainless Steel Protective Grille Heating Element Electrical Cable, 5' (152.4 cm) Heat Equalizer Electrical Cable, 5' (152.4 cm) Room Temperature Sensor & Cable, 9.5' (289.56 cm) Door Sensor & Cable Assembly, 9.83' (299.62 cm) IQAir Display Panel Cable, 16' (487.68 cm) Installation and Operation Manual REQUIRED FOR OPERATION (Sold Separately)Saunum AirIQ Wi-Fi (SKU: 4745090010565)Saunum Heater Stones (SKU: 6418530920714)