FD-4 Trinity Infra-Steam Combination Sauna | Finnmark Designs

The Finnmark Designs FD-4 Trinity Infra-Steam Sauna is the only sauna in the world that combines three wellness modalities in a single unit: UL Listed Spectrum Plus™ infrared heaters, a Harvia Vega 1.9kW traditional steam heater with sauna stones, and medical-grade red light therapy. All three systems run on 120V and plug into a standard home outlet — no electrician needed.

Key Features

• 3-in-1 Combination System — The only sauna with UL listed infrared heaters, a traditional steam stone heater, and medical-grade red light therapy in one unit.
• UL Listed Spectrum Plus™ Infrared — Short-wave infrared penetrates up to 25× deeper than carbon panels for maximum therapeutic benefit.
• Harvia Vega 1.9kW Steam Heater — Wall-mounted Finnish-made heater for traditional steam on 120V — no electrician required.
• Spectrum Red Light™ Therapy — 192-diode medical-grade LED panel at 650nm with full-color chromotherapy.
• Plug-In Ready — All three systems run on standard 120V.
• Antimicrobial Cedar Interior — Western Canadian cedar resists mold, bacteria, and fungus.
• Thermal Plus™ Aspen Exterior — Heat-treated to never rot, warp, decay, or chip.
• V2 LCD Controller — 5" touchscreen with Bluetooth audio and 6" marine-grade HiFi speakers.
• Low EMF — Tested by a NASA award-winning testing facility.

Specifications

• Capacity: 2 Person
• Exterior Dimensions: 48"W × 48"D × 83"H
• Interior Dimensions: 45.2"W × 44.5"D × 75.5"H
• Exterior Material: Thermal Plus™ Canadian Aspen
• Interior Material: Antimicrobial Western Red Cedar
• Infrared Output: 1.7kW (1,750W)
• Traditional Heater: Harvia Vega Compact 1.9kW (120V, wall-mounted)
• Electrical: 120V / 15.9A (standard outlet)
• Glass: 8mm Tempered with Gasket
• Room Volume: 86 cu. ft.
• SKU: FD-KN004
• Brand: Finnmark Designs

Shipping

Free shipping in lower 48.