
Infrared, steam and red light in one
The FD-5 Trinity XL combines UL listed Spectrum Plus infrared heaters, a Harvia KIP 4.5 kW traditional heater with stones for steam, and a 192-diode 650 nm red light therapy panel. It is the larger version of the FD-4 Trinity.
An extra-large two-tier bench sits in a Western red cedar interior behind a Thermal Plus aspen exterior. Infrared mode reaches 170 F; the traditional heater reaches 190 F.

Infrared, steam and red light
Run deep infrared sessions, pour water over hot stones for steam, or add red light therapy and chromotherapy.

An extra-large two-tier bench
The XL cabin gives four people a two-tier cedar bench, with a gasketed 8mm glass door to hold the heat.

Touchscreen and sound
A 5 in. V2 touchscreen with Bluetooth runs the sauna and 6 in. marine-grade HiFi speakers.
What comes with it
Trinity XL sauna
- Cabin panels
- 8mm tempered glass door with gasket
- Two-tier bench
- Infrared heater panels
- Harvia KIP 4.5 kW heater
- One box Harvia AC3000 stones (29 lb)
- Red light therapy panel
- V2 touchscreen controller with Bluetooth
- Power supply, cables and hardware
Infrared heaters and the Harvia heater ship with the cabin. Electrical work must be done by a licensed electrician.
FD-5 Trinity XL
- Capacity
- 4 people
- Exterior
- 72 in. W x 48 in. D x 83 in. H
- Interior
- 68.5 in. W x 45.2 in. D x 75.5 in. H
- Infrared
- 2,700 W at 240 V (18.8 A)
- Traditional heater
- Harvia KIP 4.5 kW, 240 V single phase (208 V 3-phase available)
- Max temperature
- 170 F infrared; 190 F traditional
- Materials
- Western red cedar interior; Thermal Plus aspen exterior
- Certification
- ETL; heater UL listed
- Weight
- 575 lb (261 kg)
Before you order
Something we haven't covered? Call (888) 715-7999 or book a free design call.
Is the heater included?
Yes. The Harvia KIP 4.5 kW heater and one box of AC3000 stones are included. Finnmark recommends a second box of stones so you can choose the best-fitting rocks.
What electrical service does it need?
240 V single phase for the infrared and the Harvia heater, installed by a licensed electrician. A 208 V three-phase version is available; ask us.
Where do you ship and install?
Kits ship across Canada and the US on a pallet by freight. Installation is available in the Okanagan, Calgary and Edmonton. Book a free design call at (888) 715-7999 or through our contact page.

