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Finnmark FD-4 Trinity Infrared and Traditional 2-Person Hybrid Sauna
Trinity Combination Sauna – 2-Person Infrared & Traditional Steam Sauna (48"W x 48"D x 78"H)
Experience full-spectrum home wellness with the Trinity Combination Sauna FD-4, a 2-person sauna that combines UL-listed Spectrum Plus™ infrared heaters, a Harvia Vega 120V traditional steam heater, and medical-grade red light therapy. This compact unit provides a complete and rejuvenating sauna experience in the comfort of your home.
Key Features
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Full-Spectrum Heating: Short-wave infrared panels penetrate muscles and joints for deep heat therapy, while the Harvia Vega traditional heater allows water to be splashed on sauna rocks for authentic steam.
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Red Light Therapy: Medical-grade 650nm LED panel enhances skin health and wellness benefits.
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Eco-Friendly & Convenient: Operates on a standard 120V outlet; no professional electrician required.
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Low EMF: Tested for safety by a NASA-award-winning facility.
Comfort & Luxury Features
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Extra-large two-tier bench system for spacious seating
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Built-in LCD touchscreen controller with Bluetooth audio
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Six-inch HiFi marine-grade speakers for premium sound
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8mm tempered glass for optimal thermal retention
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Interior made from antimicrobial Western Red Cedar to resist mold and bacteria
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Exterior crafted from Thermal Plus™ Aspen for long-lasting durability
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Ceiling LED lights with Chromotherapy
Harvia Vega Compact Traditional Heater
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Wall-mounted, stainless steel, 1.9kW
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Fits sauna rooms 70–106 cu. ft.
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Requires 29 lbs of sauna stones (additional recommended)
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Ergonomic controls with switch mountable left or right
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Designed and manufactured in Finland
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2-year consumer warranty
Specifications
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Model: FD-4
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Capacity: 2 persons
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Interior Materials: Western Red Cedar
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Exterior Materials: Thermal Aspen
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Voltage: 120V
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Infrared Power: 1750W
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Amperage: 15/20A
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Plug Type: NEMA 5-15P
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Maximum Temperature: IR 170°F / Traditional 190°F
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Interior Dimensions (W × D × H): 44" × 45" × 75"
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Exterior Dimensions (W × D × H): 48" × 48" × 83"
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Room Volume: 86 cu. ft.
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Door Dimensions: 23.625" × 68.875"
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Glass Thickness: 8mm
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Weight: 437 lbs
The FD-4 Trinity Combination Sauna provides the combined benefits of infrared heat, traditional steam, and red light therapy in one safe, durable, and luxurious home wellness solution.

