What ProSaunas owners say
Public reviews and notes owners sent our team, word for word. Names are shortened to a first name and last initial, or to initials.
★★★★★“Great communication and service! Really happy with my experience.”
★★★★★“I received our sauna wood order last week and love the product!”
★★★★★“Excellent response times and customer service.”
★★★★★“Fast delivery, great customer service, and wonderful product. Highly recommend to anyone who is thinking about it! You won't regret it!”
★★★★★“I couldn't be happier with the service at SaunaMarketplace, Ben was incredibly thorough with his service and expertise and guided me through every step of the purchase process.”
★★★★★“First of all I want to say Ben was fantastic and very informative with all the products on his website. He recommended the Saunum Air and this was the best decision for my 6x8 ft 7 feet high cedar sauna. I got the 7kw with Wi-Fi and the power is plenty. I can take a dry sauna with no water on the rocks or add water and it becomes a steam room. The best part is when you turn the fan on and add water you can sit at lower level and not get too hot or cold. … I have been in saunas most of my life and Saunum changes the game. It is built solidly and pumps out tons of heat. I would recommend this unit big time Saunum hit it out of the park with the fan system. … Before you buy a sauna heater make sure you talk to Ben about this unit and the benefits.”
Most people think about bench boards. Fewer think about what’s underneath them until the bench bounces. This is the piece that stops the bounce: ProSaunas alder 3×3 glulam, 2.68" square, engineered for structural bench support.
It’s a glulam, not solid: layers of alder laminated together for stability. That matters in a sauna where humidity swings are constant. The S4SEE finish still applies (smooth on all four sides, eased edges), so the exposed parts look intentional, not rough. At $11.62 per linear foot, it’s priced as a structural component, which is what it is.
Why Alder
Alder is a classic Finnish sauna wood for exactly the reasons that matter here: it doesn’t overheat, it handles moisture well, and the warm tone looks right next to the bench boards it’s supporting. Thermal conductivity around 0.12 W/m·K means the support members won’t burn the back of a calf if they’re exposed. Fine grain, honey-like scent, E1 certified. The practical note: alder is softer than some alternatives, and these supports will show marks if you’re rough with them during install. Clamp carefully and drill pilot holes.
Specifications
- SKU: PS-ALDER-3X3-S4SEE-SHP
- Species: European Alder (glulam)
- Profile: S4SEE SHP, engineered bench support
- Thickness: 2.68"
- Width: 2.68"
- Available lengths: 1 ft, 8 ft
- Price: $11.62 per linear foot
- Made in Estonia by ProSaunas
- E1 certified, ultra-low emissions
Where it goes
Bench legs, cross-supports, and structural framing under alder bench boards. Combine with the 2×3 or 2×6 S4SEE boards for a fully matched alder bench system. Also works as a visible support element in open-frame bench designs where the structure is part of the aesthetic.
Shipping and samples
Sold by the linear foot. Flat $795 freight to the continental US, or free with a heater order. Free samples available: text your name and address to (844) 565-1113.
Call Ben² at (844) 565-1113 if you’d like to talk through the board count before you order.
Planning guides: Sauna bench design guideChoosing sauna wood
Prebuilt
Brushes, Whisks and Body Care
Vents