FD-3 Full-Spectrum Infrared Sauna | Finnmark Designs

The Finnmark Designs FD-3 Full-Spectrum Infrared Sauna is a spacious 3-to-4 person home sauna that lets you stretch out and fully relax while receiving the deepest infrared therapy available. Like all Finnmark saunas, the FD-3 combines UL Listed Spectrum Plus™ short-wave infrared heaters with Spectrum Carbon 360° long-wave panels — achieving temperatures up to 170°F for an unparalleled full-body sweat.

Key Features

• UL Listed Spectrum Plus™ Heaters — Short-wave infrared for up to 25× deeper penetration than standard carbon panel heaters.
• Full-Spectrum Technology — Unique combination of short-wave and Spectrum Carbon 360° long-wave panels for higher temps, full-body coverage, and deeper results.
• Spacious 3–4 Person Interior — Wide 72" layout with room to stretch out fully and share sessions.
• Antimicrobial Cedar Interior — Western Canadian cedar naturally resists mold, bacteria, and fungus.
• Thermal Plus™ Aspen Exterior — Heat-treated to never rot, warp, decay, or chip.
• Spectrum LED Red Light Therapy — Medical-grade 650nm near-infrared ceiling lights with color chromotherapy.
• Controller 2.0 — Built-in 5" LCD touchscreen with Bluetooth audio and 6" HiFi speakers.
• Low EMF — Independently tested by a NASA award-winning facility.
• Built for a Lifetime — 10-Year Warranty — One of the strongest warranties in the infrared sauna industry, covering structure, heaters, and electrical.
• 4-Inch Thick Walls — The thickest insulation in the industry delivers the highest infrared temperatures and maximum heat retention.
• Mechanical Ventilation — Built-in ventilation system ensures consistent air circulation for enhanced heat quality and a more comfortable session.

Specifications

• Capacity: 3–4 Person
• Exterior Dimensions: 72"W × 46"D × 78"H
• Interior Dimensions: 67"W × 41"D × 70"H
• Exterior Material: Thermal Plus™ Canadian Aspen
• Interior Material: Antimicrobial Western Red Cedar
• Infrared Output: 3.1kW (3,150W)
• Electrical: 240V / 15A
• Glass: 8mm Tempered
• Room Volume: 111.3 cu. ft.
• SKU: FD-KN003
• Brand: Finnmark Designs
• Wall Thickness: 4 inches

Warranty

Every Finnmark sauna is backed by a 10-Year Warranty — one of the most comprehensive in the industry. This covers the structure, heaters, and electrical components. Purchase from an authorized dealer (like Wellness Matrix USA) to ensure full warranty coverage.

Shipping

Free shipping in lower 48.