The HUUM Drop 4.5kW Sauna Heater combines award-winning modern design with a high stone capacity to deliver soft, balanced heat and long-lasting steam for compact to medium sauna rooms. Signature rounded "water-drop" design inspired by nature Wall-mounted format to maximize usable floor space Large stone capacity - 121 lb (55 kg) - for soft, sustained steam Direct stone-to-element contact for efficient heat transfer Durable stainless steel construction for long service life Compatible with UKU control systems (Wi-Fi and non-Wi-Fi variants) Optional accessories available: safety railing, embedding flange, heat diverter Designed for a steady, slow heat profile ideal for relaxing sauna sessions HUUM Drop 4.5kW heater (model H1001052) UKU control system (Classic, Glass, Wood, or Wi-Fi versions) Sauna stones - approximately 55 kg (5-10 cm rounded stones recommended) Heat-resistant power cable and properly rated electrical breaker/wiring Installation by a qualified electrician Model / SKU:H1001052Power:4.5 kWRecommended Sauna Volume:106-247 ft³ (3-7 m³)Stone Capacity:121 lbs (55 kg)Voltage:240 VPhase:Single phaseTypical Breaker:30 AMaterial:Stainless steelMount Type:Wall-mounted Minimum clearances: follow manufacturer installation guidelines