Almost Heaven Grayson 4-Person Cabin Sauna

The Grayson is constructed with 1-3/8-inch thick tongue-and-groove lumber sections, providing enough thermal mass to retain heat efficiently indoors. You can choose between rustic fir, rustic cedar, or clear cedar depending on your aesthetic preferences and budget. The 1-3/8-inch thickness strikes a practical balance for an indoor unit, ensuring the room heats up to typical traditional temperatures without needing overly massive wall profiles.

Powered by a standard 6kW electric heater running on a 240V, 30-amp circuit, this unit requires professional hard-wiring by an electrician. The heater brings the room up to operational temperatures within about an hour. Because it relies on your existing flooring (such as concrete, tile, or vinyl), you need to ensure your indoor surface can handle moisture and heat. The pre-assembled wall and roof sections make DIY installation manageable for two people in roughly six hours using just a cordless drill.

Comfort-wise, the multi-level seating gives you a choice between the hotter upper bench and the milder lower bench. The large front windows and tempered glass door keep the interior from feeling cramped, while the stainless steel fasteners and hinges hold the wooden frame securely together over years of heating and cooling cycles.