SaunaBox Forge 1-Person: Traditional Finnish Sauna
Our most powerful sauna yet. The Forge delivers the raw, elemental power of traditional high-heat sauna -- refined into a modern architectural statement built for your backyard.
Designed for those who crave real heat, Forge reaches up to 220°F (104°C) with its powerful 3.5kW Harvia® heater, creating a deep, enveloping warmth that transforms every session into a full-body reset.
Every detail has been considered. From the rich grain and natural aroma of 100% Canadian Hemlock to the black-tinted tempered glass that adds privacy with a sleek edge, Forge balances performance with presence. Integrated ambient lighting softens the space, turning powerful heat into a calming ritual.
Built specifically for indoor or outdoor living, Forge is weather-resistant and engineered to endure the elements year-round. Rain, sun, cold evenings -- your recovery routine doesn't stop. Serious heat, built to last.
Key Features:
• Harvia Vega Compact 3.5kW Electric Heater: Finnish commercial-grade, the same unit used in professional spa installations worldwide.
• 220°F Maximum Operating Temperature: Heats to 170°F in ~25 minutes from cold start, hits 220°F in ~40 minutes.
• 100% Canadian Hemlock Interior: Light-toned, low-resin, low-odor wood that stays cool to the touch at full temperature.
• Matte Black Aluminum Exterior over Cedar Framing: Built for year-round outdoor use.
• Full-Length Tempered Glass Door: Black-tinted glass with matte black hinges and Saunabox-branded horizontal pull handle.
• FlowCore Active Ventilation: 1 fan (60W) + intake/exhaust vents create a convection loop that intensifies heat and keeps oxygen fresh.
• RGB LED Ambient Chromotherapy Lighting: Color-selectable interior strip.
• Single Bench with S-Shaped Ergonomic Backrest: For extended, comfortable sessions.
• Slatted Wood Flooring: Elevated for drainage and barefoot comfort.
• Raised Feet: Ground clearance promotes drainage and airflow underneath the cabin.
• Hardwired 240V Installation: No cords, no adapters -- permanent setup by a licensed electrician.
Dimensions:
• Exterior: 43.31” W x 41.34” D x 80.71” H (1.10 m x 1.05 m x 2.05 m)
• Interior: 39.37” W x 37.80” D x 72.83” H (1.00 m x 0.96 m x 1.85 m)
• Door glass: 23.62” W x 64.96” H
• Assembled weight: 214 kg / 471.8 lb
• Weight limit: ~300 lb
• Internal standing height: 6' 2"
Electrical Specifications:
• Heater: Harvia Vega Compact BU -- 3.5 kW (Model #HCBU352401)
• Voltage: 240V
• Current Draw: 14.4A
• Breaker: Dedicated double-pole (typically 20A -- confirm with local electrician)
• Wire Gauge: 12/2 copper conductor
• Installation: Hardwired -- must be installed by a licensed electrician
• Total peak power draw: ~3,620W (3,500W heater + 60W lighting + 60W fan)
Shipping:
• Ships via LTL freight in a consolidated plywood crate
• Gross shipping weight: 259 kg / 571 lb
• Crate: 216 x 151 x 96 cm / 85 x 59.4 x 37.8 in
• Forklift or 2-person team with pallet jack required on-site
Warranty: 2-year cabin warranty covering structural frame, exterior cladding, interior wood, door, and hardware. 1-year Harvia heater warranty covering defects in materials and workmanship.
What type of sauna is The Forge?
The Forge is a traditional Finnish dry sauna -- not infrared. The Harvia Vega Compact heater warms the air and the sauna rocks to temperatures up to 220°F (104°C) at bench level. You can pour water over the rocks to create a brief burst of steam (löyly), but the primary experience is high-temperature dry heat.
How long does it take to heat up?
The Forge reaches a usable 170°F in approximately 25 minutes and hits its maximum operating temperature of 220°F in approximately 40 minutes from a cold start.
Can I use The Forge year-round, indoors and outdoors?
Yes. The matte black aluminum exterior and cedar framing handle year-round outdoor conditions including rain, cold, and UV exposure. It can also be installed indoors in a garage, basement, or dedicated wellness room. In extreme cold climates, outdoor heat-up time may be slightly longer.
Does The Forge require an electrician to install?
Yes. The Forge is hardwired to a dedicated 240V circuit and must be connected by a licensed electrician. It is not a plug-in appliance -- no cord or plug is included. A dedicated double-pole 240V circuit is required, typically protected by a 20A double-pole breaker. Confirm exact breaker size with your local electrician.
What surface can I place The Forge on and what's the weight limit?
Any level, load-bearing surface -- concrete pad, composite or pressure-treated deck, pavers, compacted gravel, or an indoor floor capable of supporting the unit's 214 kg / 471.8 lb assembled weight. Do not place directly on soil or grass without a proper base. The user weight limit is approximately 300 lb, and the internal standing height is 6' 2".
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DESCRIPTION
SaunaBox Forge 1-Person: Traditional Finnish Sauna
Our most powerful sauna yet. The Forge delivers the raw, elemental power of traditional high-heat sauna -- refined into a modern architectural statement built for your backyard.
Designed for those who crave real heat, Forge reaches up to 220°F (104°C) with its powerful 3.5kW Harvia® heater, creating a deep, enveloping warmth that transforms every session into a full-body reset.
Every detail has been considered. From the rich grain and natural aroma of 100% Canadian Hemlock to the black-tinted tempered glass that adds privacy with a sleek edge, Forge balances performance with presence. Integrated ambient lighting softens the space, turning powerful heat into a calming ritual.
Built specifically for indoor or outdoor living, Forge is weather-resistant and engineered to endure the elements year-round. Rain, sun, cold evenings -- your recovery routine doesn't stop. Serious heat, built to last.
Key Features:
• Harvia Vega Compact 3.5kW Electric Heater: Finnish commercial-grade, the same unit used in professional spa installations worldwide.
• 220°F Maximum Operating Temperature: Heats to 170°F in ~25 minutes from cold start, hits 220°F in ~40 minutes.
• 100% Canadian Hemlock Interior: Light-toned, low-resin, low-odor wood that stays cool to the touch at full temperature.
• Matte Black Aluminum Exterior over Cedar Framing: Built for year-round outdoor use.
• Full-Length Tempered Glass Door: Black-tinted glass with matte black hinges and Saunabox-branded horizontal pull handle.
• FlowCore Active Ventilation: 1 fan (60W) + intake/exhaust vents create a convection loop that intensifies heat and keeps oxygen fresh.
• RGB LED Ambient Chromotherapy Lighting: Color-selectable interior strip.
• Single Bench with S-Shaped Ergonomic Backrest: For extended, comfortable sessions.
• Slatted Wood Flooring: Elevated for drainage and barefoot comfort.
• Raised Feet: Ground clearance promotes drainage and airflow underneath the cabin.
• Hardwired 240V Installation: No cords, no adapters -- permanent setup by a licensed electrician.
Dimensions:
• Exterior: 43.31” W x 41.34” D x 80.71” H (1.10 m x 1.05 m x 2.05 m)
• Interior: 39.37” W x 37.80” D x 72.83” H (1.00 m x 0.96 m x 1.85 m)
• Door glass: 23.62” W x 64.96” H
• Assembled weight: 214 kg / 471.8 lb
• Weight limit: ~300 lb
• Internal standing height: 6' 2"
Electrical Specifications:
• Heater: Harvia Vega Compact BU -- 3.5 kW (Model #HCBU352401)
• Voltage: 240V
• Current Draw: 14.4A
• Breaker: Dedicated double-pole (typically 20A -- confirm with local electrician)
• Wire Gauge: 12/2 copper conductor
• Installation: Hardwired -- must be installed by a licensed electrician
• Total peak power draw: ~3,620W (3,500W heater + 60W lighting + 60W fan)
Shipping:
• Ships via LTL freight in a consolidated plywood crate
• Gross shipping weight: 259 kg / 571 lb
• Crate: 216 x 151 x 96 cm / 85 x 59.4 x 37.8 in
• Forklift or 2-person team with pallet jack required on-site
Warranty: 2-year cabin warranty covering structural frame, exterior cladding, interior wood, door, and hardware. 1-year Harvia heater warranty covering defects in materials and workmanship.
FAQ
What type of sauna is The Forge?
The Forge is a traditional Finnish dry sauna -- not infrared. The Harvia Vega Compact heater warms the air and the sauna rocks to temperatures up to 220°F (104°C) at bench level. You can pour water over the rocks to create a brief burst of steam (löyly), but the primary experience is high-temperature dry heat.
How long does it take to heat up?
The Forge reaches a usable 170°F in approximately 25 minutes and hits its maximum operating temperature of 220°F in approximately 40 minutes from a cold start.
Can I use The Forge year-round, indoors and outdoors?
Yes. The matte black aluminum exterior and cedar framing handle year-round outdoor conditions including rain, cold, and UV exposure. It can also be installed indoors in a garage, basement, or dedicated wellness room. In extreme cold climates, outdoor heat-up time may be slightly longer.
Does The Forge require an electrician to install?
Yes. The Forge is hardwired to a dedicated 240V circuit and must be connected by a licensed electrician. It is not a plug-in appliance -- no cord or plug is included. A dedicated double-pole 240V circuit is required, typically protected by a 20A double-pole breaker. Confirm exact breaker size with your local electrician.
What surface can I place The Forge on and what's the weight limit?
Any level, load-bearing surface -- concrete pad, composite or pressure-treated deck, pavers, compacted gravel, or an indoor floor capable of supporting the unit's 214 kg / 471.8 lb assembled weight. Do not place directly on soil or grass without a proper base. The user weight limit is approximately 300 lb, and the internal standing height is 6' 2".
No FAQs match your search.
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Recommended Thickness
6mm:
General-purpose for home fitness
8mm:
Home + light commercial use. Suitable for functional trainers, squat racks, treadmills
9mm:
Popular in commercial gyms, ideal for CrossFit & heavier dropsMost Popular
12mm:
Heavy-duty, great for Olympic lifting zones
18mm:
Industrial strength, used for powerlifting & stables
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