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Prebuilt Saunas

Pre-Built Indoor and Outdoor

  • Go from boring basement to fabulous sauna in just a few hours!
  • Built with 1/2'' thick wood using tongue and groove construction
  • Free standing units mean no need for any framing
  • Construction can be completed in as little as 60 minutes
  • Pre-fabricated Fully Insulated Wall and Ceiling Panels
  • All products are safety tested - UL and cUL listed
  • Have Questions? Help is just one click or call away!

Outdoor Saunas

Find the size that fits your space and customize your sauna with your choice of heater, controller, roofing and lighting options. The rugged exterior is designed for years of use exposed to the elements. 123 Saunas includes everything you need and uses the same top quality materials used in our kits.


Upgrade to Cedar Shingles for a durable and unique look

Shop for Outdoor Saunas Starting as low as $4,148.40

Indoor Saunas

Having an indoor sauna has never been easier! Building a luxury home or commercial sauna start with using the best materials and technology. This kit contains our finest selection of hand picked wood, FINO premium sauna heaters and optional LED lighting. In just an hour you can be enjoying a hot steamy sauna in your very own home.

Shop for Indoor Saunas Starting as low as $3,579.00
Most Popular Pre-Built Saunas
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Items 1 to 10 of 25 total

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  1. 4x4 FINO Pre-Built Sauna Room in Clear White Aspen

    This is a 1 to 2 person Pre-Built Sauna Room
    48"D x 48"W x 79"H

    • Only Select Grade Vertical Grain Clear White Aspen is Used, Both Inside and Outside. Each Clear White Aspen Board is Obsessively Inspected and Hand Selected from Winter Harvest to Ensure Color is Snow White
    • A Completely Hypoallergenic Pre-Assembled Sauna for Multiple Chemical Sensitivity Disorder
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Aspen Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Mouldings for Corners and Hardware Kit for Assembly are Included
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • Sauna Heater in this Sauna is Made in Finland
    • Sauna is Made in the USA
    • See Description Below for the Complete List of Items Included

    As low as: $4,226.80

  2. Polar PB66 Outdoor Pre-Built Sauna

    This is a 4 Person Pre-Built Outdoor Sauna Room
    72"D x 72"W x 84"H

    • Already Assembled Sauna Manufactured Specifically for Outdoor Environments
    • 3 Different Outdoor Sauna Roofs to Choose From
    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier L-Shaped Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • All Boards Run Vertically Without Any Break in Any Wall an Industry First
    • FINO HNVR Digital 6.0 KW Sauna Heater and D60 Digital Control are Both UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Moldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • Sauna Heater in this Sauna is Made in Finland
    • Sauna is Made in the USA
    • See Description Below for the Complete List of Items Included

    As low as: $6,029.50

  3. Polar PB46 Outdoor Pre-Built Sauna

    This is a 2 to 3 Person Pre-Built Outdoor Sauna Room
    48"D x 72"W x 84"H

    • Already Assembled Sauna Manufactured Specifically for Outdoor Environments
    • 3 Different Outdoor Sauna Roofs to Choose From
    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • All Boards Run Vertically Without Any Break in Any Wall an Industry First
    • FINO HNVR Digital 4.5 KW Sauna Heater and D60 Digital Control are Both UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Moldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • Sauna Heater in this Sauna is Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $4,835.55

  4. Polar PB44 Pre-Built, Modular Sauna Room

    This is a 1 to 2 person Pre-Built Sauna Room

    48"D x 48"W x 79"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Mouldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $3,579.00

  5. Polar PB45 Pre-Built, Modular Sauna Room

    This is a 2 to 3 person Pre-Built Sauna Room

    48"D x 60"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Mouldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $3,777.00

  6. Polar PB46 Pre-Built, Modular Sauna Room

    This is a 2 to 3 person Pre-Built Sauna Room

    48"D x 72"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Moldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $4,149.55

  7. Polar PB47 Pre-Built, Modular Sauna Room

    This is a 4 person Pre-Built Sauna Room

    48"D x 84"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled L-Shaped Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Mouldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $4,596.00

  8. Polar PB48 Pre-Built, Modular Sauna Room

    This is a 5 person Pre-Built Sauna Room

    48"D x 96"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled L-Shaped Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Mouldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $5,045.40

  9. Polar PB55 Corner 5-Sided Pre-Built, Modular Sauna Room

    This is a 3 person Pre-Built Sauna Room

    60"D x 60"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Moldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $4,012.00

  10. Polar PB56 Pre-Built, Modular Sauna Room

    This is a 3 person Pre-Built Sauna Room

    60"D x 72"W x 84"H

    • Only Select Grade Vertical Grain Clear Western Red Cedar is Used, Both Inside and Outside.
    • Each Clear Cedar Board is Obsessively Inspected and Hand Selected to Ensure the Color Matches Perfectly
    • Double Tier Pre-Assembled Benches with Pre-Assembled Backrests are Included
    • Your Choice of Finnish Manufactured Premium Sauna Heaters that are UL and cUL Listed
    • Imported Finnish Sauna Stones for Sauna Heater Designed for Pouring Water Over
    • Specialized Vapor Proof Sauna Light, Cedar Vents, Pre-Assembled Heater Guard Rail and All Detailed Trim Moldings for Corners and Hardware Kit for Assembly are Included
    • Optional Mahogany Exterior is Available for a Large Price Reduction
    • This Entire Sauna Room is Completely UL Listed an Industry First
    • All Sauna Heater Options in this Sauna are Made in Finland
    • Sauna is Made in the USA
    • See Description below for the Complete List of Items Included

    As low as: $4,585.00

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