Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Open the 3D planner.

Specs
Nominal Thickness1″
Nominal Width2″
Actual Thickness.55″
Weight (per linear foot)1 lb
Attachments
Gallery

PROSAUNAS Aspen 1X2 SI Inside Corner Trim – Sauna Wood

Inside corners are where most DIY sauna cladding jobs show their work. The aspen 1X2 SI inside corner trim is the piece that covers the raw edges where two clad walls meet at an interior corner: 0.55 in thick, 1.2 in wide, in pale natural aspen that matches the wall boards. Simple, clean, and it makes a corner look like it was planned rather than improvised. Sold by the linear foot in 1 and 10 ft lengths at $1.61/lf, milled in Estonia.

Build Your Quote:

$1.61 per linear footFree samples available

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Free sample · Free shipping · No payment needed

One per wood. Ships within the continental US (lower 48 and DC).

Shipping

Important: Only select ‘Flat Rate Shipping – $795’ once per order. For all other wood items you add, choose ‘Part of existing shipment’

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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.

“Excellent response times and customer service.”

Nathan L. · Sauna LED Light Strip owner

“Great communication and service! Really happy with my experience.”

Sam S. · ProSaunas All-Glass Sauna Door owner

“I received our sauna wood order last week and love the product!”

John V. · ProSaunas Thermo-Aspen wall cladding owner

“Easily the best customer experience I’ve ever had.”

Rick S.

“It's been a pleasure working with you. Really appreciated your responsiveness and willingness to share your expertise. Top notch customer service!”

David K. · Auroom Baia Glass owner

“The service was incredible!”

John B. · Amerec 9251-140 Sauna Thermometer and Hygrometer Gauge in Fahrenheit owner

If you’ve ever looked at a sauna and thought “something feels unfinished,” there’s a good chance the inside corners had nothing on them.

The ProSaunas Aspen 1×2 SI Inside Corner Trim covers the interior corner joint where two runs of wall cladding terminate. At 0.55 in thick (0.55″) and 1.2 in wide (1.18″), it sits in the corner and covers the raw edge of both wall faces cleanly. The SI profile is cut for inside (concave) corners: a flat back, a reveal that sits against each wall, and a clean face that reads as a deliberate design element rather than a cover-up. Milled in Estonia from natural aspen to match our cladding boards in color. Sold by the linear foot in 1 and 10 ft lengths.

Why Aspen

The same reason you clad the walls in aspen: pale, cool, resin-free, hypoallergenic. And matched. When the corner trim is in the same species as the wall, the eye reads the room as a single finished surface instead of a wall with something attached to the corner. Natural aspen is a softer wood, so this trim piece can dent if it takes a direct hit from a ladle or a bucket. In a corner that’s a low-probability event, but worth knowing.

Specifications

  • SKU: PS-ASPEN-1X2-INSIDE-CORNER-TRIM-SI
  • Species: Natural Aspen
  • Profile: SI inside corner trim
  • Thickness: 0.55″
  • Width: 1.18″
  • Available lengths: 1, 10 ft
  • Price: $1.61 per linear foot
  • Milled in Estonia

Where it goes

Every inside (concave) corner in a clad sauna room. That’s typically 4 vertical corner runs plus any interior wall corners in a two-bench layout. For outside (convex) corners, the matching piece is the aspen 2×2 VA outside corner trim. Order both when you order your cladding: you’ll need them at the end of the job and they’re inexpensive to add to the order.

Shipping and samples

Sold by the linear foot. Flat $795 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: Choosing sauna woodSauna vapor barrier guide

Expert help that stays with you

Small details become expensive problems once installation begins. We ask the questions early, so a mismatched part, an overlooked requirement or an installation issue gets caught while it is still easy to fix.

Our job does not end when your order ships. We stay available through installation and beyond. If something needs attention, we stay involved, work the problem, and help see it through.

We want you to feel good about choosing Sauna Marketplace long after your first session, and confident recommending us to a friend. That standard guides the advice we give, the products we sell, and the way we take care of our customers.

Sauna and heater customers also receive free shipping on sauna accessories for life.

Planning a sauna, or need help with one you purchased from us? Our founders have built saunas from the crate up and both run saunas at home. New customers and existing Sauna Marketplace sauna and heater owners can Open the 3D planner.

Specs
Nominal Thickness1″
Nominal Width2″
Actual Thickness.55″
Weight (per linear foot)1 lb
Attachments
Gallery