You can do a lot of things right in a sauna build and have the whole thing look unfinished because the door casing is raw lumber. Trim is not exciting, but the absence of it is noticeable.
This is the alder UK door trim: 1.65" wide, 0.47" thick (42mm x 12mm), sized specifically for sauna doorway casing. The flat profile sits flush against cladding, covers the gap at the rough opening, and gives the door a furniture-quality edge. Natural alder, same warm tone and fine grain as the rest of the ProSaunas alder family, E1 certified, milled in Estonia.
Why Alder
At a doorway the trim gets touched repeatedly, both going in and coming out. Alder handles that contact well: no resin, stays cool, doesn’t splinter. The warm reddish-brown matches the alder bench and cladding family if you’re doing a coordinated room. One thing to know: at 0.47" thick, this is a finishing trim, not a structural door stop. It’s not designed to take hard impacts. For a sauna where the door gets heavy commercial use, plan to check this piece every few years and replace as needed. For residential use it holds up well.
Specifications
- SKU: PS-ALDER-1X2-DOOR-TRIM-UK
- Species: European Alder (natural)
- Profile: UK door trim
- Thickness: 0.47" (12mm)
- Width: 1.65" (42mm)
- Available lengths: 1 ft, 8 ft
- Price: $3.07 per linear foot (MAP)
- Made in Estonia by ProSaunas
- E1 certified, ultra-low emissions
Where it goes
Door casing on interior sauna doorways. Run it on three sides of a standard door opening (two verticals plus a head). Pairs with alder SI inside corner trim and VA outside corner trim to complete the full trim package for a clad room. Matches all ProSaunas alder bench and wall profiles in species and tone.
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.

Prebuilt
Sauna Brushes
Vents