PROSAUNAS Prehung Douglas Fir Sauna Door with Insulated Glass

Overview

Upgrade your sauna with a handcrafted, prehung PROSAUNAS solid wood door designed specifically for high‑heat, high‑humidity environments. Built from premium Douglas Fir with a Hemlock jamb and header, this door combines classic sauna aesthetics with modern insulated glass and self‑closing hardware.

Each door is prehung in a factory‑assembled frame for a precise fit and easier installation. A large dual‑pane tempered glass panel fills your sauna with natural light, enhances the feeling of space, and helps maintain consistent temperatures thanks to LoE argon‑filled insulation.

Now available in four sizes (24” x 80”, 26” x 72” (NEW), 30” x 80”, and 36” x 80” ADA‑compliant), this door works beautifully in compact home saunas, standard rooms, and accessibility‑focused layouts.

Key Features

• Solid Douglas Fir door slab for timeless sauna aesthetics and durability

• Natural Hemlock jamb & header for strength and dimensional stability

• Dual‑pane, clear tempered glass with LoE argon‑filled insulation

• Large vertical glass panel bathes the sauna in natural light and opens up the space

• Prehung onto a pre‑assembled frame for quick, accurate installation

• Self‑closing metal hinges with adjustable tension for smooth, secure closure

• Outward‑swinging design suitable for sauna safety best practices

• Elegant vertical pull handles

  • Exterior: black stainless steel

  • Interior: black Thermo‑Aspen wood (Grade A), comfortable to the touch in sauna temperatures

• Three width options: 24″, 30″, and 36″ (ADA‑compliant width option)

Note for exterior use: Door must be fully treated/sealed on all sides and edges to protect against the elements.

Available Sizes & Rough Openings

All doors are 80″ tall, prehung in a frame approximately 81.5″ high. Choose the width that best suits your sauna layout:

• 24″ x 80″ Door (Narrow)

  • Door panel: 24″ W x 80″ H

  • Overall with frame: ~25.5″ W x 81.5″ H

  • Rough opening: 26″ W x 82″ H

  • Ideal for compact saunas and tight spaces.

• 30″ x 80″ Door (Standard)

  • Door panel: 30″ W x 80″ H

  • Overall with frame: ~31.5″ W x 81.5″ H

  • Rough opening: 32″ W x 82″ H

  • Great all‑around choice for most residential sauna builds.

• 36″ x 80″ Door (Wide / ADA‑Width)

  • Door panel: 36″ W x 80″ H

  • Overall with frame: ~37.5″ W x 81.5″ H

  • Rough opening: 38″ W x 82″ H

  • Provides generous clearance and an ADA‑friendly width for accessible sauna designs.

Each size is available with left‑ or right‑hand hinging and outward swing.

Construction & Materials

• Door Material: Solid Douglas Fir

• Frame Material: Hemlock

• Frame Finish: Natural (ready for staining, sealing, or clear finish as desired)

• Overall Door Thickness: 1.75″

• Frame Thickness: 0.75″

• Standard Frame Depth: Up to 5.5″

• Custom Frame Depth (optional): Up to 10″

• Threshold Air Gap: 0.75″ for proper air movement and fit

Insulated Glass

• Style: Clear tempered dual‑pane

• Insulation: LoE argon‑filled for improved thermal performance

• Thickness: ~0.63″

• Glass size increases with door width for a more expansive viewing area:

  • 24″ door: approx. 16″ W x 67.25″ H

  • 30″ door: approx. 22″ W x 67.25″ H

  • 36″ door: approx. 28″ W x 67.25″ H

Hardware & Hinges

• Self‑closing metal hinges

  • Finish: Matte black

  • Material: Steel / stainless steel (depending on component)

  • Orientation: Left‑ or right‑hinged options

  • Adjustability: Tension‑adjustable for a firm, positive close

  • Spring‑loaded function helps keep the door securely shut without a traditional latch

• Exterior Handle

  • Material: Stainless steel

  • Finish: Black

  • Approx. size: 1.19″ diameter x 19.69″ high

• Interior Handle

  • Material: Grade A Thermo‑Aspen wood

  • Finish: Black

  • Approx. size: 1.19″ diameter x 19.69″ high

Handles are vertical and easy to grip, even with wet hands.

What’s Included

• PROSAUNAS Douglas Fir sauna door (selected size)

• Pre‑assembled Hemlock door jamb & header

• Self‑closing steel/metal hinges (2)

• Exterior stainless steel pull handle

• Interior Thermo‑Aspen wood pull handle

• Installation hardware

• Installation instructions

Installation Notes

This PROSAUNAS door is shipped prehung to make installation faster and more accurate:

• Set the prehung unit into your prepared rough opening (see sizing above).

• Use a level and shims/wedges to plumb and square the jambs.

• Secure the hinge side first, then close the door to confirm alignment before fastening the opposite jamb.

• Install the header/crossbeam, then insulate and seal any gaps between the jamb and wall framing (spray foam or similar).

• Hinge tension and door alignment can be fine‑tuned via the hinge bolts and tension adjustment.

• For a smooth close, adjust the roller latch or hinge tension so the door seats firmly without slamming.

Always follow the included installation manual and observe local building codes and sauna best practices.

Exterior Use

If this door is exposed to outdoor conditions (exterior saunas, outbuildings, etc.):

• Fully treat and seal all sides, edges, and cut surfaces prior to installation.

• Maintain the finish as needed to guard against moisture, UV, and temperature swings.

Proper finishing ensures long‑term performance and minimizes warping or checking.