The SaunaLife Model GL4 is the 4-person entry point into the Garden Luxury Series — a contemporary outdoor sauna cabin that pairs architectural precision with premium Nordic materials and a level of finish detail rarely found at this price. Its defining visual feature is the integrated eaves and recessed front porch that frame the entrance with clean horizontal lines, contrasting black exterior trim against the warm Thermo-Spruce cladding, and a full-width dotless LED strip running beneath the eaves to light the approach to your sauna from the outside in.
The GL4 shares the same 1.57" Thermo-Spruce wall specification as the GL6 — thermally treated Nordic spruce that resists moisture, decay, and fungi far better than conventional timber while developing a richer, darker grain as it ages. The full-height bronze tempered glass front wall and reversible bronze glass door flood the interior with natural light and open the sauna visually to whatever landscape surrounds it, making the compact footprint feel significantly larger once you're inside. Two-tier satin-smooth knot-free benching in thermo-hardwood follows the natural contour of the body for a seating surface that's genuinely comfortable through long sessions, not just functional. Roof boards and porch and floor boards are also Thermo-Spruce at 1.57" and 1.1" respectively, carrying the same material quality from ceiling to ground.
Inside, indirect Wi-Fi and remote-controlled LED lighting produces a diffuse, even glow that flatters the wood grain without harsh hotspots. Outside, the full-width recessed eave LED strip gives the GL4 its distinctive presence at night — illuminating the porch and entry with an unbroken horizontal line of soft light. The roof uses self-adhesive roofing felt with black metal flashing for superior water management. A full ventilation and drainage system is integrated into the kit. DIY assembly is rated for 2 persons over 2 days with all fasteners and materials included. Heater sold separately — required for operation.
Dimensions & Capacity
| Exterior dimensions | Not listed — contact us for details |
| Capacity | 4 bathers |
| Wall thickness | 1.57" Thermo-Spruce |
| Roof thickness | 1.57" Thermo-Spruce |
| Porch board thickness | 1.1" Thermo-Spruce |
| Floor board thickness | 1.1" Thermo-Spruce |
| Front glass | 5/16" tempered bronze |
Material & Construction Specifications
| Exterior walls | Thermo-Spruce, 1.57" thick, interlocking-beam |
| Roof | Thermo-Spruce, 1.57" thick + self-adhesive roofing felt |
| Porch boards | Thermo-Spruce, 1.1" thick |
| Floor boards | Thermo-Spruce, 1.1" thick |
| Benches & backrests | Thermo-hardwood, 2-tier, knot-free, satin-smooth |
| Front glass wall | 5/16" tempered bronze glass, full-height |
| Door | Tempered bronze glass, full-height pull, reversible |
| Door & window frames | Black painted |
| Exterior trim | Black fascia boards + black metal flashing |
| Roof waterproofing | Self-adhesive roofing felt + metal flashing |
| Ventilation | Integrated ventilation system |
| Drainage | Integrated drainage system |
| Ground frame | Included |
| Construction | Interlocking-beam — allows natural expansion & contraction |
| Assembly | DIY 2-person, 2-day |
| Origin | Handcrafted, Northern Europe |
Features at a Glance
| 1.57" Thermo-Spruce walls — superior durability | Full-height 5/16" bronze tempered glass front wall |
| Contemporary linear design — horizontal eaves | Full-height bronze tempered glass reversible door |
| Integrated recessed front porch | Full-length black door pull handle |
| Full-width recessed LED strip under eaves | Black fascia boards + black metal flashing |
| 2-tier knot-free thermo-hardwood benching | Self-adhesive roofing felt for superior waterproofing |
| Ergonomically contoured bench surfaces | Integrated ventilation system |
| Indirect interior LED — Wi-Fi + remote | Integrated drainage system |
| Black exterior trim throughout | Ground frame included |
| 1.57" Thermo-Spruce roof boards | All fasteners + assembly materials included |
| 1.1" Thermo-Spruce porch & floor boards | DIY 2-person, 2-day installation |
LED Lighting System
| Exterior | Full-width recessed dotless LED strip under eaves |
| Interior | Indirect dotless white LED — dimmable |
| Control | Wi-Fi app-based operation + wireless handheld remote |
| Rating | IP67 — water & heat rated |
Compatible Sauna Heaters (sold separately — required for operation)
| Heater | Type | Output | Notes |
|---|---|---|---|
| Harvia KIP 60B | Electric | 6 kW | Built-in controls |
| Harvia Cilindro PC60 | Electric | 6 kW | Built-in time & temp controls |
| Harvia Wall SWS60 | Electric | 6 kW | Stainless steel wall-mount |
| Harvia Spirit SP60E | Electric | 6 kW | Floor-standing |
| HUUM Hive Mini 6 | Electric | 6 kW | Large stone capacity |
| Saunum Air 7 | Electric | 7 kW | Climate equalizer technology |
What's Included in the Package
| Item | Specification | Notes |
|---|---|---|
| Thermo-Spruce wall boards | 1.57" thick | Interlocking-beam system |
| Thermo-Spruce roof boards | 1.57" thick | Full coverage |
| Thermo-Spruce porch boards | 1.1" thick | Recessed front porch |
| Thermo-Spruce floor boards | 1.1" thick | Full interior floor |
| 2-tier benches & backrests | Thermo-hardwood, knot-free | Ergonomically contoured |
| Front glass wall | 5/16" tempered bronze glass | Full-height |
| Front door | Tempered bronze glass, reversible | Long black painted handle |
| Window frames | Black painted | Matching trim |
| Black fascia boards | Exterior trim | Contemporary contrast detail |
| Black metal flashing | Roof perimeter | Superior water management |
| Self-adhesive roofing felt | Under roof boards | Weatherproof layer |
| Ground frame | Structural base | Level footing |
| Ventilation system | Intake & exhaust | Integrated |
| Drainage system | Integrated | Full water evacuation |
| Exterior LED strip | Recessed under eaves, full-width | Dotless, IP67 |
| Interior LED lighting | Indirect, dimmable | Wi-Fi app + handheld remote |
| Screws & all fasteners | Complete hardware kit | All materials included |
| Assembly instructions | Included | English language guide |
Warranty: SaunaLife Limited Lifetime Warranty — documentation included. Designed by SaunaLife, handcrafted in Northern Europe.
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