Outdoor Infrared
Grandby 3-Person Outdoor Infrared Sauna
The Grandby 300D infrared sauna features a sealed weatherproof cabin and metal composite roof for outdoor use.
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 about two hours
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 Grandby 3-Person Outdoor Infrared.
Overview
About the Grandby 3-Person Outdoor Infrared sauna
Create an inviting outdoor wellness retreat with the Grandby 3-Person Outdoor Infrared Sauna. Combining spacious comfort, elegant craftsmanship, and advanced infrared heating technology, the Grandby transforms your backyard or patio into a relaxing sanctuary where you can unwind, recharge, and escape the demands of everyday life. Its generous three-person capacity makes it ideal for enjoying a peaceful sauna session alone or sharing a rejuvenating experience with family and friends.
Powered by seven high-performance far infrared heaters, the Grandby delivers gentle, evenly distributed warmth with temperatures reaching up to 140°F. Its efficient 2,100-watt heating system provides consistent performance, creating a soothing environment for relaxation and everyday wellness.
Expertly constructed from natural Canadian Hemlock wood, the Grandby features a specially sealed, weather-resistant exterior and a durable metal composite roof designed to provide lasting protection against the elements. Its beautiful natural wood grain and spacious interior create an inviting atmosphere, while the wide bench seating comfortably accommodates up to three adults.
A collection of premium amenities enhances every session, including recessed interior lighting that creates a warm and welcoming ambiance. An integrated Bluetooth sound system allows you to enjoy your favorite music, while the built-in oxygen ionization system helps maintain fresh interior air. Convenient LED digital controls provide effortless operation, and integrated cup holders add an extra touch of comfort and convenience.
Designed for straightforward home installation, the Grandby features easy-to-assemble panel construction and operates on a dedicated 120V, 20-amp electrical circuit. Combining weather-resistant durability, spacious three-person seating, and modern infrared technology, the Grandby delivers a premium outdoor sauna experience that brings comfort, relaxation, and timeless style to your outdoor living space.
What's included
- 01Sealed Weatherproof Finish for Durabilty
- 02Metal Composite Roof-Long Lasting Protection Against the Elements
- 03Natural Canadian Hemlock Wood
- 047 Powerful Infrared Heaters
- 05LED Control Panel
- 06Recessed interior lighting
- 07Bluetooth sound system
- 08Ozone Sterilization System
- 092100 watts
Specifications
By the numbers
Size & weight
- Overall (W × D × H)
- 69"W x 47"D x 87"H
- Roof footprint
- 79" x 61" x 87"
- Exterior width
- 69"
- Exterior depth
- 47"
- Exterior height
- 87"
- Interior width
- 55"
- Interior depth
- 43"
- Interior height
- 68"
- Shipping weight
- 425 lbs
Power & electrical
- Power draw
- 2,100 watts
- Electrical
- Requires dedicated 110V–120V outlet
- Circuit
- 20 amp
- Certification
- ETL/CSA Certified — meets US and Canadian electrical safety standards
Build
- Wood
- Canadian Hemlock
- Heater
- Infrared Heaters
Ownership
- Warranty
- 10-year structural · 1-year parts & electronics
- Availability
- In Stock
- Model code
- 300D3
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 about two hours. 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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