Short answer: the S1N is a 124-gallon, 1-person wooden tub with a fiberglass insert, sold assembled for $2,490 at Select Saunas. It has chiller connections but no chiller. Fill it with ice to start, or buy the S1NC package, which adds SaunaLife’s chiller/heater for $5,340.
Size and weight
Outside, it is 40” across and 41.3” tall. Inside, the insert is 34.4” across and 36” deep, so you sit upright. Filled, SaunaLife puts it at 1,177 lbs.
Here’s what the spec sheet won’t tell you: 1,177 lbs on a 40” circle is about 135 lbs per square foot. That is our arithmetic from the listed figures. Check a deck’s rating before you set it there.
Cold now, chiller later
The tub comes with 3/4” NPT connections for a chiller and a 1” drain. That means you can run it as an ice bath first and add a chiller without changing the tub.
The listing calls it a “cold/hot immersion tub.” Hot use needs a chiller/heater, which this model doesn’t include.
Wood and build
This listing names Thermo-Pine for the exterior and lists 0.7” walls in the package contents. The S1NC package page describes the same tub as Thermo-Spruce with 1.65” surrounds. Ask the dealer which applies before you order.
You get, you give up
You get a fully assembled tub with steps, an insert, and chiller-ready plumbing for $2,490. You give up the chiller, and a warranty term you can read on the listing itself.
How it compares
The Dundalk Baltic costs $2,555 with a plastic liner and doesn’t publish its capacity. The S1N publishes more of its numbers.
Bottom line: a good first tub if you want wood outside and a smooth insert inside, and you can wait on the chiller. Cleveland Clinic advises beginners to start at 50 to 59°F and never stay in longer than five minutes.
