Indoor Infrared
Roslyn Full Spectrum 4-Person Indoor Infrared Cedar Sauna
Full spectrum infrared with red light therapy, a touchscreen control panel and heat to 170°F. Runs on a dedicated 110–120V circuit.
Dedicated 110–120V outlet
Requires its own dedicated 110–120V outlet on a circuit nothing else shares. An electrician can add one in an afternoon — we'll spec it with you.
Assembles in under an hour
Pre-built panels lock together with two people and a screwdriver. No special tools.
Free curbside freight
Ships free to the lower 48 with curbside and liftgate delivery included.
10-year structural · 1-year parts & electronics
Backed in writing and supported from our Richmond, VA office.
See it running
Walk through the Roslyn Full Spectrum 4-Person Indoor Infrared Cedar.
Overview
About the Roslyn Full Spectrum 4-Person Indoor Infrared Cedar sauna
The Roslyn 4-person indoor infrared sauna features convenient side-by-side seating and a spacious cabin to relax, unwind, and enjoy the experience with family and friends. The Roslyn has 10 carbo-nano heaters for quickly getting the sauna to your desired temperature up to 140 degrees. The Roslyn also includes ergonomic backrests for maximum comfort, chromotherapy mood lighting, an oxygen ionization system for purifying the air, recessed interior and exterior lighting, a Bluetooth speaker system, and cup holders. The Roslyn is easy to assemble, and the all-natural Canadian red cedar wood will enhance any decor.
Full spectrum means near, mid and far infrared rather than far infrared alone, so the cabinet heats to 170°F and reaches deeper. Red light therapy is built in, the controls are a touchscreen panel, and the heaters are UL listed. Same Canadian wood, same footprint and same bench layout as the cabinet it is built on.
Runs on a dedicated 110–120V circuit.
What's included
- 01Full spectrum heat — near, mid and far infrared, not far infrared alone
- 02Heats to 170°F
- 03Built-in red light therapy
- 04Upgraded touchscreen control panel
- 05UL-listed heaters
- 06Natural Canadian Red Cedar
- 07Dual LED control panels
- 08Recessed interior & exterior lighting
- 09Bluetooth speaker system
- 10Oxygen Ionizer
- 11LED Reading Lamp
- 12Voltage
- 13Requires dedicated 110V–120V outlet
- 14Heater
- 15Full spectrum — near, mid and far infrared, UL listed
- 16Max Temp
- 17170°F
- 18Controls
- 19Touchscreen control panel
- 20Red Light Therapy
- 21Included
- 22Wood
- 23Western Red Cedar
- 24Dimensions
- 2572" x 54" x 76"
- 26Exterior Width
- 2772"
- 28Exterior Depth
- 2954"
- 30Exterior Height
- 3176"
- 32Interior Width
- 3367"
- 34Interior Depth
- 3549"
- 36Interior Height
- 3770"
- 38Weight
- 39482 lbs
- 40Warranty
- 4110-year structural · 1-year parts & electronics
Specifications
By the numbers
Size & weight
- Overall (W × D × H)
- 72" x 54" x 76"
- Exterior width
- 72"
- Exterior depth
- 54"
- Exterior height
- 76"
- Interior width
- 67"
- Interior depth
- 49"
- Interior height
- 70"
- Shipping weight
- 482 lbs
Power & electrical
- Electrical
- Requires dedicated 110V–120V outlet
Build
- Wood
- Western Red Cedar
- Heater
- Full spectrum — near, mid and far infrared, UL listed
- Max temperature
- 170°F
- Controls
- Touchscreen control panel
- Red light therapy
- Included
Ownership
- Warranty
- 10-year structural · 1-year parts & electronics
- Availability
- Available 15 October 2026
- Model code
- 400KS-FS
Specs & dealer assets
Download the print-ready spec sheet or the full product image set.
Authorized dealer? These assets are cleared for retail use. Wholesale pricing: (800) 976-5530.
Not sure it fits your space?
Send us your room dimensions and we'll confirm clearances before you buy.
Get fit helpGood to know
Before you buy
What does delivery look like?+
Free curbside freight to the lower 48 with liftgate included. In-stock orders dispatch within 1-2 business days and arrive in roughly 5-10. You'll get tracking the day it ships.
What electrical does it need?+
This model needs its own dedicated 110–120V outlet — a circuit that nothing else shares. Most electricians can add one in an afternoon, and we'll spec it with you before you order.
How hard is assembly?+
Pre-built panels lock together with two people and a screwdriver in under an hour. No special tools, no contractor.
What if it doesn't fit my space?+
Send us your room dimensions before you buy and we'll confirm clearances — or try the AI visualizer to see this exact model in a photo of your space.
Reviews
What owners say
1,240+ verified reviews
Exactly as described
Assembly took two of us about an hour with a screwdriver, just like they said. Heats up fast and the cedar smells incredible. Freight delivery was smooth.
Best purchase for recovery
I use it almost every day after training. The low-EMF was a big deal for me and the carbon panels heat evenly. Worth every penny.
Great value vs the boutique brands
Shopped Sunlighten and Sun Home first. This was thousands less for genuinely comparable quality. Docked one star only because I wanted more color options.
Plug and play, seriously
Plugged into a normal outlet in the spare room and it just worked. Bluetooth and the chromotherapy lights are a nice touch.
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