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Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.

That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.

We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.

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Specs
Nominal Thickness1″ (25.4mm)
Nominal Width2″ (50.8mm)
Actual Thickness.55″ (14mm)
Weight (per linear foot)1 lb (0.5 kg)
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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: 14mm thick, 30mm 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:

Price range: $1.61 through $12.83

Shipping Unloading Notice

Ships Free With Any Sauna Heater Purchase

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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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 14mm thick (0.55″) and 30mm 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″ (14mm)
  • Width: 1.18″ (30mm)
  • Available lengths: 1, 10 ft
  • MAP: $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.

Best Price and Service Guarantee

Sauna Marketplace offers legendary customer service and support. Odds are you landed here from a referral — because we don’t advertise.

That doesn’t mean you should have to pay more. We always honor the lowest prices allowed by our manufacturers. If you find a lower advertised price from an authorized dealer, send us a screenshot and we’ll match it.

We want you to feel great about your purchase for decades. That’s why we also offer free shipping on sauna accessories for life with the purchase of any sauna or sauna heater on Sauna Marketplace.

Shop Saunas | Shop Sauna Heaters

Specs
Nominal Thickness1″ (25.4mm)
Nominal Width2″ (50.8mm)
Actual Thickness.55″ (14mm)
Weight (per linear foot)1 lb (0.5 kg)
Video Attachments

Gallery