FD-5 Trinity XL Infra-Steam Combination Sauna | Finnmark Designs

🔥 Pre-Order Now — Limited Slots Available!

New stock arriving August 28, 2026. This is a high-demand item — slots are filling up fast.

Lock in your order today and be first in line when it arrives.

The Finnmark Designs FD-5 Trinity XL is the large-format version of the award-winning Trinity combination sauna — combining UL Listed Spectrum Plus™ infrared heaters, a Harvia KIP 4.5kW traditional steam heater, and medical-grade red light therapy in one spacious 4-person unit. It delivers every wellness benefit available — deep infrared penetration, authentic steam from real sauna stones, and 650nm red light therapy — all in a single session.

Key Features

• 3-in-1 Combination System — Infrared, traditional steam, and medical-grade red light therapy in one XL sauna.
• UL Listed Spectrum Plus™ Infrared — 2.7kW of short-wave infrared with up to 25× deeper penetration than carbon panel heaters.
• Harvia KIP 4.5kW Steam Heater — Finnish-engineered UL listed heater with exceptional rock capacity for powerful steam sessions.
• Spectrum Red Light™ Therapy — 192-diode medical-grade LED panel at 650nm plus full-color chromotherapy.
• Spacious 4-Person Layout — Extra-large two-tier bench system with 72" of bench width.
• 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: 4 Person
• Exterior Dimensions: 72"W × 48"D × 83"H
• Interior Dimensions: 68.5"W × 45.2"D × 75.5"H
• Exterior Material: Thermal Plus™ Canadian Aspen
• Interior Material: Antimicrobial Western Red Cedar
• Infrared Output: 2.7kW (2,700W)
• Traditional Heater: Harvia KIP 4.5kW (240V, UL listed)
• Electrical: 240V / 18.8A
• Glass: 8mm Tempered with Gasket
• Room Volume: 130 cu. ft.
• SKU: FD-KN005
• Brand: Finnmark Designs

Shipping

Free shipping in lower 48.